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Introduction to Philosophy

Aug 26, 2025

Overview

This lecture introduces philosophy as a discipline, explores its main branches and core questions, traces its historical origins, and highlights the value of philosophical thinking.

What is Philosophy?

  • Philosophy is the study of fundamental questions about existence, knowledge, values, reason, and reality.
  • The word “philosophy” comes from the Greek “philosophia,” meaning “love of wisdom.”

Main Branches of Philosophy

  • Metaphysics studies the nature of reality, existence, and what is ultimately real.
  • Epistemology investigates the nature, sources, and limits of knowledge.
  • Ethics examines what is morally right and wrong, focusing on value theory and moral principles.
  • Logic analyzes the structure of arguments and principles of valid reasoning.
  • Aesthetics explores the nature of beauty, art, and taste.
  • Political philosophy considers justice, rights, law, and the relationship between individuals and society.
  • Philosophy of mind and philosophy of religion are further subfields.

Origins and Historical Context

  • Philosophy began in ancient Greece, seeking explanations beyond myth and tradition.
  • Notable early philosophers include Socrates, Plato, and Aristotle.

Methods and Importance

  • Philosophers use critical thinking, logical analysis, and reasoned argumentation to address questions.
  • Distinguishing between opinion and fact is central to philosophical inquiry.
  • Philosophy helps develop skills in argument analysis, clarity of thought, and ethical reasoning.
  • Studying philosophy can influence culture, politics, religion, and science.

Key Terms & Definitions

  • Metaphysics — study of reality and existence.
  • Epistemology — study of knowledge and belief.
  • Ethics — study of moral values and rules.
  • Logic — study of valid reasoning and argument structure.
  • Aesthetics — study of beauty and art.
  • Political philosophy — study of government, justice, and rights.

Action Items / Next Steps

  • Review introductory readings or videos for each main branch of philosophy.
  • Reflect on a fundamental philosophical question (e.g., "What is knowledge?") and consider your initial thoughts.
  • Prepare questions for class discussion relating to a key philosopher or concept.