Philosophy — Introduction to Philosophy and Metaphysics + 4 more topics

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• Reference (Denotation): This is the idea that some words get their meaning by pointing to things in the world. For example, "Barack Obama" refers to a specific person. "The tallest building in the world" refers to the Burj Khalifa.
• Sense (Connotation): This is the way in which a word or phrase refers to something. Gottlob Frege, a key figure, distinguished between sense and reference. Two phrases can have the same reference but different senses. For example, "the morning star" and "the evening star" both refer to the planet Venus, but they convey different ways of thinking about Venus (its appearance at different times of day).
• Truth-Conditions: For declarative sentences, their meaning is often understood in terms of their truth-conditions – the conditions under which the sentence would be true. To understand "The cat is on the mat" means knowing what the world would have to be like for that sentence to be true.

Philosophy literally means "love of wisdom." It's not a single subject, but rather an approach to understanding the world by asking deep, fundamental questions that science or everyday observation can't fully answer. It tackles questions like: What is truth? What is good? What is real?

Philosophy isn't about memorizing facts; it's about developing critical thinking skills and the ability to formulate coherent arguments. You'll learn to analyze concepts, spot assumptions, and understand different perspectives. It's often divided into several main branches:

Epistemology, from the Greek words "episteme" (knowledge) and "logos" (study), is the branch of philosophy concerned with the nature, origin, and scope of knowledge. When you delve into epistemology, you're essentially asking: "How do I know what I know?"

A widely accepted starting point for understanding knowledge is the Justified True Belief (JTB) theory. This theory suggests that for you to know something, three conditions must be met:

Ethics, or moral philosophy, is the branch of philosophy that involves systematizing, defending, and recommending concepts of right and wrong conduct. It’s not just about what people do believe is right, but what they should believe and do.

There are three main branches of ethical theory: