Firstly, I would like to make the disclaimer that this will not be a comprehensive list, since this is an oceanic topic.
Without further ado, I will jump into the topic.
- Eastern Philosophy: The Path of Realization Eastern traditions often blur the line between philosophy and spirituality, focusing on the nature of the self and the path to liberation (Moksha or Nirvana).
Non-Dualistic Schools (Monism)
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Advaita Vedanta: Popularized by Adi Shankara and later brought to the West by Swami Vivekananda. It posits that the individual soul (Atman) and the ultimate reality (Brahman) are one and the same. The perceived world is Maya (illusion) - an appearance of Brahman rather than a separate entity.
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Mahayana Buddhism: While Theravada focuses on individual liberation, Mahayana introduces the Bodhisattva ideal: the vow to delay one's own Nirvana until all sentient beings are enlightened. It emphasizes Sunyata(emptiness) - the idea that nothing has an independent, permanent essence.
Dualistic and Analytical Schools
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Samkhya: One of the oldest schools, it is strictly dualistic. It divides existence into Prakriti (matter/nature) and Purusha (pure consciousness). Liberation is achieved when the Purusha realizes it is entirely distinct from the material world.
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Nyaya: The "School of Logic." Nyaya thinkers developed rigorous systems of epistemology, identifying valid sources of knowledge (perception, inference, comparison, and testimony) to understand reality and achieve justice.
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Western Philosophy: The Path of Reason
Western thought generally trends toward categorizing the external world, the structure of language, and the mechanics of human existence.
Idealism and Formalism
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Platonism & Neoplatonism: Founded on Plato’s Theory of Forms. It suggests that the physical world we perceive is merely a shadow of a higher, eternal reality consisting of "Perfect Forms" (e.g., the concept of a "Circle" is perfect; any physical circle is an imperfect copy).
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Aristotelianism: Unlike Plato, Aristotle focused on Empiricism. He built knowledge through Axiomatic Reasoning, starting with self-evident truths (axioms) and using syllogistic logic to reach new conclusions about the natural world.
The Linguistic and Logic Turn
- Analytic Philosophy: Led by figures like Bertrand Russell and Ludwig Wittgenstein, this school argues that most philosophical problems are actually "puzzles of language." By analyzing the logical structure of sentences, they sought to clear up conceptual muddle.
Existence and Dialectics
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Dialectical Philosophy: Rooted in the Socratic Method (dialogue to find truth) and later formalized by Hegel. It views progress as a tension between a Thesis and an Antithesis, which eventually resolve into a higher Synthesis.
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Existentialism & Absurdism: Represented by Sartre and Camus. These schools grapple with a "silent" universe. Existentialism suggests we must "create" our own meaning through radical freedom, while Absurdism focuses on the conflict between our search for meaning and the meaningless nature of the world.