Comprehensive Study Guide: History of Philosophy, Metaphysics, and Ethical Theory
Origins and Evolution of Philosophical Knowledge
Philosophy originated in Greece during the s. B.C., appearing as a fundamental shift in human inquiry. It is not merely a science but serves as the bedrock for all scientific pursuits, emphasizing constant thought and reflection across every facet of life. Humans are distinctively defined by their possession of reason and freedom. Before philosophy emerged, society turned to myths to dictate behavior and explain the world. In those times, described by the phrase in ille tempore, cultural knowledge was transmitted via oral tradition before eventually being codified into written works. Four primary pillars of this early written record include Hesíodo, who wrote the Teogonía (describing the birth of gods) and Trabajos y días (an instructional guide for living), and Homer, the author of the Iliad and the Odyssey.
The mythological framework eventually entered a crisis as it failed to offer satisfying solutions to everyday problems, prompting society to reflect more deeply on social, political, cultural, and scientific levels. This transition is known as the gradual shift from "Myth to Logos." The early thinkers, known as Presocratic philosophers, often carried a tragic sense of existence, viewing life through an existentialist lens where birth implies death. They established an incipient science based on observation, believing that reality reveals itself to those with the right predisposition. Aristotle noted that philosophy was triggered by a "radical question" concerning the arché of the physis, or the underlying principle of nature.
Factors Contributing to the Birth of Philosophy
Several specific developments facilitated the rise of philosophical thought. Language development was paramount; new terminology such as physis and philosophy was created to allow for the conceptualization of new ideas. Plato was notably the first to use the term "philosopher." As the s. philosopher Wittgenstein asserted, "the limits of my knowledge are the limits of my language." This linguistic expansion was accompanied by the rise of abstract thought, allowing for concepts like "good" and "bad" to be debated. Symbols like currency also emerged, representing abstract value and facilitating a broader understanding of symbolic representation.
Material and social changes also played roles. The expansion of commerce caused ideas to travel alongside people, leading to the realization that different cultures possessed different mythological explanations for the same phenomena. The rise of democracy, where power resided with the people, led to the development of oratory, sophistry, and dialectic. While oratory focused on public speaking and dialectic involved philosophical questioning to provoke thought, sophistry often focused on the art of making any argument seem true, regardless of objective reality, treating truth as relative. Additionally, improvements in military strategy and the shift from an oral to a written society ensured that laws and decisions made in the ágora (public square) were fixed and unchangeable.
The Presocratic Quest for the Arché
The earliest philosophers, the Milesians from Mileto, sought rational explanations for the world's origin. They were monists, believing the arché resided in a single element. Tales de Mileto, considered the first thinker and one of the Seven Sages of Greece, identified the arché as water. Since few of his works remain, much of his thought is known via later compilations by Empédocles. Anaxímenes proposed that the arché was air, viewing it as the vital necessity for all life and cosmic existence.
Anaximandro, an active politician whose writings include Acercas de la Naturaleza, proposed the apeiron as the arché. He defined the apeiron in two senses: quantitatively it is infinite, and qualitatively it is eternal. He introduced an early version of the four elements theory (), suggesting they once existed as a mass before the apeiron ordered them. He also theorized that Life originated in water and that the Earth is round and in constant motion.
The Pythagoreans formed a religious society practicing Orphism and the transmigration of souls. They believed the entity Noûs created all souls together, but they fell into bodies due to guilt and must seek purification to return home. For them, mathematics was the key to this purification as numbers were considered immutable and the essence of all being. They developed the Theory of the Tetraktys, where , , , and , summing to the perfect number . They believed the universe was written in mathematical language and proposed the existence of an "anti-earth" to ensure the number of cosmic orbits equaled .
Change, Being, and the Pluralists
Heraclitus of Ephesus, known as "The Obscure" for his ambiguous aforisms, was a pluralist who viewed the world as a constant state of becoming (devenir). He defined reality as a struggle of opposites and identified fire as a symbolic arché representing necessary destruction and rebirth. His famous quotes include "the one is in the multiple" and "everything flows, nothing remains; no man ever steps in the same river twice."
In contrast, Parmenides of Elea founded ontology, the science of being. He argued that the Being is essential, immutable, and indestructible. Since nothing can come from nothing, nothing truly changes. In his work Acerca de la Naturaleza, he describes a chariot journey led by the goddess Diotima toward two paths: the Way of Truth (where the Being is unique, compact, spherical, and infinite) and the Way of Opinion (the deceptive world of the senses). His disciple, Zeno of Elea, created "aporias" to defend this view by reducing the concept of change to an absurdity. Examples include "Achilles and the Tortoise"—arguing that if space is infinitely divisible, the faster runner can never overtake the lead—and the "Zelemín of Wheat" to critique the notion of plurality.
Later pluralists included Empédocles, who added two forces to the four elements: Love (unity) and Hate (separation). Anaxagoras identified the arché as Noûs, an infinite ordering mind that governs past, present, and future. He taught that accepting the limits of our finite intelligence leads to ataraxia, or peace amidst uncertainty. Democritus and his master Leucipo were the first atomists, proposing a mechanistic universe where sensible objects emit eidolas (later called atoms) that affect our senses.
Sophistry, Socrates, and the Pursuit of Universal Truth
The Sophists, such as Gorgias and Protágoras, were relativists. Gorgias leaned toward nihilism, while Protágoras famously stated, "Man is the measure of all things." For them, truth was relative to each subject. Socrates opposed this, shifting focus from cosmology to ethics and politics. He left no writings, believing writing was too static; his ideas were recorded by Herodoto, Jenofonte, Aristófanes, Aristotle, and most importantly, Plato.
Socrates utilized the dialectic method, asking "What is X?" to find universal essences. He famously employed the phrase "I only know that I know nothing" to humble his interlocutors. His commitment to truth led to his trial for impious behavior and corrupting the youth. Despite an initially close vote, he was sentenced to death by drinking cicuta. He refused to repent, claiming he had served the polis by opening the eyes of its citizens.
Epistemology: Human Knowledge and the Nature of Truth
Knowledge is defined by the relationship between a knowing subject (sujeto cognoscente) and a known object. It utilizes two main organs: the senses and reason. Sensible knowledge, mediated by external stimuli (like sight or touch) and internal stimuli (like fatigue or muscle aches), helps us adapt to our environment. These sensations are stored in memory and transformed into imagination. A perception is an organized interpretation of these sensations within a context.
Rational knowledge involves intelligence and abstract concept creation. Plato and Aristotle represent the two major early branches of this. Plato's ontological dualism separated the perfect World of Ideas from the flawed Physical World of appearances. Aristotle rejected this, proposing a realist theory where we can only know concrete, particular individuals. He defined humans as "animals with logos," using language to name abstract concepts and build society.
Aristotle also categorized the functions of thought. The first function generates universal and abstract names. The second function creates judgments by combining names (e.g., "All men are mortal"). These can be analytic (the predicate is within the subject; necessarily true but uninformative) or synthetic (truth depends on experience and provides new information). Reasoning combines these judgments into conclusions, which can be deductive (general to specific, strictly true) or inductive (specific to universal, potentially true or false).
Criteria and Theories of Truth
The classical Greek term for truth is Aletheia, meaning truth is present but veiled. Six major criteria help humans identify truth: tradition (long-standing belief), authority (stated by an expert), logical coherence (not contradicting axioms, applicable to formal sciences like Mathematics), verifiability (real-world check), utility (beneficial and orienting), and evidence (indubitable certainty).
St. Thomas Aquinas, a century scholastic, argued that truth is an adequacy between the intellect and the thing. He believed our rational and sensible truths must align to demonstrate God's existence. He outlined seven steps to knowledge: sensory contact, recording particulars (passive understanding), abstraction (active understanding), mental image creation, storage in imagination, memory recall, and finally naming. He viewed humans as a composite of matter (body) and form (soul/understanding).
Modern views followed. Wittgenstein focused on linguistic logic, arguing that an affirmation is true only if it describes facts in the world. He distinguished between things (smallest units) and facts (states of things). Descartes, the father of rationalism, sought indubitable truth through a strict method of four rules: Evidence, Analysis, Synthesis, and Enumeration. In his Meditations, he employed hyperbolic doubt—doubting the senses, the dream-vigilia state, and even imagining a "malicious genius"—to arrive at his first certainty: cogito, ergo sum (I think, therefore I am). He identified three substances: the Thinking I, the Infinite Substance (God), and the Extended Substance (the sensible world).
Philosophical Critique and Perspectives
Ortega y Gasset introduced perspectivism, arguing that "root reality" is a coexistence of the self and the world (yo y mi circunstancia). Truth is the sum total of all valid individual perspectives. In contrast, the "Masters of Suspicion"—Marx, Nietzsche, and Freud—questioned the foundations of Western society. Marx introduced Materialism Histórico, focusing on the Infrastructure (economic forces and relations of production) and the Superstructure (legal/ideological systems that legitimate the ruling class). He described religion as the "opium of the people" and criticized capitalist labor for causing "alienation," where workers become estranged from their own creative essence.
Nietzsche critiqued Western morality and metaphysics, specifically the Apollonian (order) vs. dionysian (chaos) balance, which he felt was destroyed by Socrates and Plato. He declared "God is dead," meaning the old objective moral values had lost their power. He proposed a transition through nihilism toward the Superhombre (Superman), who creates his own values. This evolution occurs in three phases: the Camel (submission), the Lion (destruction of old values), and the Child (creative affirmation of new life).
Comparative Analysis: Philosophy and the World of 1984
The concepts of various philosophers can be applied to critique the society in George Orwell's 1984. St. Thomas's definition of knowledge as adequacy is violated by the Party's falsification of reality ("the thing"), which severs the connection between intellect and truth. Wittgenstein's assertion that the limits of language are the limits of knowledge is reflected in "Newspeak," which reduces vocabulary to restrict the capacity for thought and the creation of judgments.
Descartes' method is rendered impossible because the Party destroys the capacity for doubt, calling it "thoughtcrime" (crimente); the Party itself acts as the "malicious genius" designed to make people accept the false as true. Ortega's perspectivism is abolished as the Party mandates a single perspective as the only truth. Nietzsche's moral individualization is replaced by the Party dictating "good" and "bad" based purely on its own shifting interests. Finally, while the Superhombre is independent, the Party creates "Mass Man," which Hannah Arendt described as individuals who lose their individuality and thoughtlessly follow a leader, leading to the "banality of evil."
Metaphysics and the Existence of God
Metaphysics, meaning "beyond physics," was titled by Andronico de Rodas while organizing Aristotle's works. Aristotle called it "First Science." He introduced the fifth element, Ether, and the "Unmoved Mover" to explain cosmic motion. In Medieval philosophy, this teleological principle became Theology, identifying the Unmoved Mover as God. St. Thomas Aquinas offered five ways to prove God's existence a posteriori (based on experience): the Way of Motion, the Way of Causality, the Way of Contingency, the Way of Degrees of Perfection, and the Way of Cosmic Order.
Kant later challenged metaphysics, seeking to make it a science through "synthetic a priori" judgments. In Critique of Pure Reason, he set three limits: the forms of sensibility (), the categories of understanding (), and the distinction between the phenomenon (what we perceive) and the noúmeno (the thing-in-itself, which we cannot know). He concluded that while God cannot be known scientifically, God must be postulated for ethical reasons.
Ethics, Morality, and the Social Contract
Ethics (character) is social, while morality (custom) is individual. Plato's ethics focused on Eudaimonia (happiness) attained via virtue. He divided the soul into the concupiscible (virtue: prudence), irascible (virtue: bravery), and rational (virtue: wisdom) parts. His ideal State mirrored this: Producers, Warriors, and Philosophers-Kings. Aristotle's Nicomachean Ethics argued that virtue is a habit found in the "golden mean" between excess and defect.
Social contract theories explain society's origins. Rousseau believed humans were naturally good ("The Noble Savage") but were corrupted by private property and progress. He advocated for a "Social Contract" based on popular sovereignty and a transformative education system (as seen in his work Emilio). In contrast, Thomas Hobbes believed humans are naturally "wolves to each other" (homo homini lupus), necessitating a strong authority. J. Stuart Mill championed Utilitarianism and individual liberty, arguing that society should not interfere with an individual's private actions unless they harm others.
Modern Challenges and Existentialism
Existentialists like Jean-Paul Sartre emphasized that "existence precedes essence," meaning humans are born without a defined purpose and must create themselves through their projects and choices. Simone de Beauvoir applied this to gender in The Second Sex, famously stating, "One is not born a woman, but becomes one," arguing that femininity and masculinity are social constructs rather than biological destinies. Hannah Arendt explored the dangers of technology and "instrumental reason," where ethics are ignored in favor of efficiency. She highlighted the "banality of evil" through the trial of Adolf Eichmann, arguing that ordinary people can commit horrific acts simply through a lack of reflection and the surrender of individuality to mass movements.
María Zambrano proposed "Poetic Reason" to reconcile logos with life, arguing that rigid rationalism had historically "squared off" and restricted human existence. Finally, modern ethics as defined by Adela Cortina requires three characteristics for any moral norm: auto-obligation, universality, and inconditionality. Modern challenges like bioethics and Artificial Intelligence continue to test these philosophical boundaries, requiring a constant balance between progress and ethical limits.