Polytheism (400 BC and earlier): Religion involved multiple gods.
Philosophers: Rise of figures like Plato and Socrates introducing concepts of dualism.
Materialism: The worldview prioritizing matter and motion in understanding the universe.
Causation in Materialism:
Type of Causation: Emphasis on reasons or goals behind events.
Design and Plan: Two important aspects concerning the reasons things happen.
Events happen for a reason, often leading towards a future goal.
Influence of theologians discussing these aspects of causation.
Teleological Aspect: Hobbes critically examined the teleological view, where things happen for a purpose.
Contemporary Science: Shift towards creating models based purely on observable behaviors and material interactions, avoiding appeal to divine causation.
Hobbes’s Contribution: Advocated for a materialistic understanding, explaining phenomena without invoking design or divine plans.
1651 Publication: Hobbes’s most significant work lays foundational ideas for modern materialism.
Epistemology and Ontology:
Explored how human understanding and knowledge is influenced by sensory experiences.
This marked a shift from understanding reality directly to understanding our ideas about reality.
Concept Introduction: The idea that our perceptions are mediated by sensory experiences; encourages questioning the nature of reality.
Division between Perceptions and Reality: Ideas might be influenced by sensory pressure rather than direct divine insight.
Source of Ideas: Hobbes argued all mental concepts derive from sensory experiences:
Sensory Organs: Our ideas come exclusively from sensations generated by objects interacting with our senses.
Primary Qualities vs. Sensible Qualities:
Primary qualities: Mathematical properties of objects.
Sensible qualities: Colours, sounds, tastes, which arise from the way our senses interact with external materials.
Similarities: Both dreaming and waking experiences involve sensory information processed by the brain but differ in the nature and consistency of sensory input:
Waking: Constant stimulus results in stable and vivid perceptions.
Dreaming: Inconsistent sensory input leads to fluctuating and often surreal experiences.
Hobbes's View on Visions: He viewed visions during moments of inspiration or revelation as brain activity rather than genuine divine communication.
Materialism's Implication: Hobbes's work suggested that all phenomena can be explained in terms of matter and motion, undermining prior epistemologies based on divine revelation.
Philosophical Reaction: Hobbes’s materialism posed significant questions about the nature of existence and the reliability of human perception; concepts still relevant in contemporary philosophical debates.