The philosophies of the past, which provoked a rebellion against the intellectual establishment of their time, have left an indelible mark on mankind. The rebellious philosophers have made history, while the conformist philosophers have been quickly forgotten. Socrates, Plato, and Aristotle were the rebels in Ancient Greece. Socrates was forced by the Athenians to commit suicide by drinking hemlock after he was convicted by a court for inciting a rebellion against the Athenian establishment. Plato and Aristotle narrowly missed having a “Socratic treatment” from angry Athenians on several occasions in their lifetime. The other important philosophers who continue to be relevant till today — Cicero, Seneca, Boethius, Aquinas, Hobbes, Descartes, Spinoza, Locke, Kant, and others — too have proposed radical ideas which questioned the knowledge of their time. The philosophies which are provocative have a longer lifespan than the philosophies which are conformist.