Philosophy Deep Dive: Core Questions and Enduring Concepts

What are Philosophers Trying to Do?

Philosophy seeks to use reason and argument to determine the best-supported position on various issues. It involves a logical approach to understanding the world and ourselves. It requires backing up positions with solid reasoning, focusing on the 'why' behind opinions.

Socrates and the Importance of Acknowledging Ignorance

Socrates' wisdom stemmed from acknowledging the limits of his own knowledge. He believed that true wisdom begins with recognizing what you don't know. His approach emphasized constant questioning, critical thinking, and dialogue to pursue truth. The journey of questioning was more important than finding a final answer.

John Stuart Mill and Protecting Unpopular Opinions

Mill argued for protecting even opinions we despise.

Reasons:

• Suppressing opinions stifles creativity and hinders progress. People may withhold groundbreaking ideas if they fear ridicule or silencing, leading to societal loss.
• Society is fallible. Suppressing opinions prevents us from correcting our own mistaken beliefs through discussion. Free exchange of ideas helps societies approach the truth and avoid collective blind spots, creating a marketplace of ideas.

A Priori vs. A Posteriori Reasoning

• A priori reasoning: Truths grasped through reason alone, without sensory experience. Examples include mathematical and logical truths, such as "all bachelors are unmarried." This is knowable independent of experience.
• A posteriori reasoning: Empirical truths known through sensory experience (sight, sound, touch). Examples include "the sky is blue" or "water boils at 100 degrees Celsius at sea level." Requires observation and experiment.

Empiricism vs. Rationalism

• Empiricism: Emphasizes sensory experience as the primary source of knowledge. Thinkers like Locke and Hume believe we start as blank slates, with experience writing upon them.
• Rationalism: Emphasizes reason as the primary source of knowledge. Thinkers like Descartes believe fundamental truths can be known through intuition, independent of sensory input.

The central question is which is more reliable for finding truth. Rationalists argue for reason due to its focus on necessary truths, while empiricists argue that our understanding must be grounded in experience.

Theist, Atheist, Agnostic

• Theist: Believes in God or gods (monotheists believe in one God, polytheists in many).
• Atheist: Does not believe in the existence of God or any gods; a lack of theistic belief.
• Agnostic: Claims the existence or non-existence of God is unknown or unknowable.

Pascal's Wager

Pascal argues believing in God is a rational bet based on potential outcomes, not an attempt to prove God exists.

• If you believe in God and God exists: infinite reward (eternal happiness).
• If you believe in God and God doesn't exist: finite loss.
• If you don't believe in God and God exists: infinite loss (eternal damnation).
• If you don't believe in God and God doesn't exist: relatively little gain or loss.

Pascal argues the potential infinite gain outweighs the potential infinite loss, making belief the smarter bet.

Objections:

• Can you choose to believe? Genuine belief involves faith and conviction, not calculation.
• The "many gods" problem: Which god should you bet on?

Descartes' Argument from Perfection

Descartes argues for God's existence based on the concept of perfection. Perfection refers to qualities intrinsically better to have than not, existing in degrees (knowledge over ignorance, power over weakness).

A supremely perfect being would possess all good qualities to the highest degree possible, fully realizing all perfections.

Standard perfections attributed to God:

• Eternal (timeless, no beginning or end).
• Omnipotent (all-powerful, able to do anything logically possible).
• Omniscient (all-knowing).
• Omnibenevolent (perfectly good).

The Cartesian Circle

Descartes' argument faces a circular reasoning issue. He needs to trust his clear and distinct perceptions to argue for God's existence. However, to validate his reasoning and ensure he's not being deceived, he needs to prove the existence of a good, non-deceiving God. This creates a loop where God is needed to validate reason, but reason is needed to prove God exists.

Aquinas' Five Ways: Unmoved Mover

Aquinas observes that things are moving and changing. His argument:

1. Anything in motion was put into motion by something else.
2. The chain of movers $a \rightarrow b \rightarrow c \rightarrow d$ cannot go back infinitely.

Therefore, there must be a first unmoved mover, which Aquinas identifies as God.

Aquinas' Five Ways: First Efficient Cause

1. Everything that exists has a cause.
2. The chain of causes $a \rightarrow b \rightarrow c$ cannot go back infinitely.

Therefore, there must be a first uncaused cause, which Aquinas identifies as God.

Both arguments reject infinite regress, positing God as the ultimate starting point.

Objections to Aquinas' First Two Ways

• Is infinite regress impossible? Some argue it is possible, negating the need for a first mover or cause.
• Even if there is a first cause, why must it be the God of classical theism? It could be an impersonal force or principle.

Aquinas' Fifth Way: Harmony or Final Cause

Aquinas sees unintelligent things (plants, animals) acting consistently towards specific ends, achieving good outcomes. Since they lack intelligence, something must be directing them. This directing intelligence is God. This is an argument from observed order and goal-directedness in nature.

Paley's Watchmaker Argument

Paley uses an analogy: finding a watch implies a watchmaker due to its complexity and function. The universe is far more complex, so it must imply a vastly more intelligent designer—God.

Both Aquinas and Paley argue from order and purpose, inferring an intelligent creator.

Challenges to Arguments from Design

• Darwinian evolution: Natural selection explains complexity without a conscious designer.
• Imperfections, flaws, inefficiencies, and suffering in nature: Why would a perfect God include these?

Natural vs. Moral Evil

• Natural evil: Suffering caused by natural events (earthquakes, diseases) independent of human intention.
• Moral evil: Suffering caused by intentional actions or negligent inactions of free agents, usually humans (murder, theft, war).

The Argument from Evil

The existence of evil challenges the idea of a perfect God, who is all-loving (omnibenevolent), all-knowing (omniscient), and all-powerful (omnipotent).

1. An all-loving God would want to prevent all evil.
2. An all-knowing God would know how to prevent all evil.
3. An all-powerful God would be able to prevent all evil.
4. Evil exists.

Therefore, a God with all three properties cannot exist.

The Free Will Defense

God gave humans free will, allowing them to choose between good and evil. Free will is a great good, enabling love, moral responsibility, and virtue. God allows moral evil as the unavoidable price of free will, stemming from human misuse of freedom.

Limitations of the Free Will Defense

It struggles to explain natural evil. Earthquakes and diseases are not directly caused by human choices.

John Hick's Soul-Making Theodicy

The world with its challenges is the best environment for moral and spiritual development, better than a perfect paradise. Virtues develop by overcoming adversity. Suffering is necessary for growth. The world is designed for character development, not immediate pleasure. Moral and natural evil contribute to soul-making.

Logical Compatibility vs. Proof of Existence

Showing God and evil could possibly coexist does not prove God exists. A successful theodicy aims for logical compatibility to remove an objection to belief but doesn't provide positive evidence.

Key Quotes and Their Meaning

• Descartes: "But from the fact that I cannot think of God except as existing, it follows that existence is inseparable from God." Existence is part of the very definition of a supremely perfect being. You can't conceive of God without existence, therefore, God must exist. Existence is a necessary perfection.
• Aquinas on the unmoved mover: "This cannot go on to infinity because then there would be no first mover and consequently no other mover." States the core premise against infinite regress. A first unmoved mover must exist.
• Aquinas on harmony: "We see that things which lack intelligence act for an end, so as to obtain the best result." Unintelligent things act towards beneficial outcomes, implying guidance by an external intelligence (God).
• Paley on the watchmaker: "Design must have had a designer. That designer must have been a person." The intricate design of the world implies an intelligent designer (God).
• Paley on complexity: "In comparison with the works of nature, in greatness and complexity, the mechanism of a watch is trivial." Highlights the disparity in complexity between a watch and the natural world.
• Hume on suffering: Paints a vivid picture of suffering to challenge the idea of a good god.
• Epicurus/Hume:
  • "Is God willing to prevent evil, but not able? Then he is not omnipotent."
  • "Is he able, but not willing? Then he is malevolent."
  • "Is he both able and willing? Then whence cometh evil?"
  • "Is he neither able nor willing? Then why call him God?" The trilemma laid bare.
• Hick on struggle: Argues that goodness achieved through overcoming challenges is more valuable than goodness given without effort. The world is a place for children to develop into maturity.