Mortimer J. Adler lists the Great Ideas
The Synopticon, Great Books of the Western World (1952)Angel; Animal; Aristocracy; Art; Astronomy; Beauty; Being; Cause; Chance; Change; Citizen; Constitution; Courage; Custom and Convention; Definition; Democracy; Desire; Dialectic; Duty; Education; Element; Emotion; Eternity; Evolution; Experience; Family; Fate; Form; God; Good and Evil; Government; Habit; Happiness; History; Honor; Hypothesis; Idea; Immortality; Induction; Infinity; Judgment; Justice; Knowledge; Labor; Language; Law; Liberty; Life and Death; Logic; Love; Man; Mathematics; Matter; Mechanics; Medicine; Memory and Imagination; Metaphysics; Mind; Monarchy; Nature; Necessity and Contingency; Oligarchy; One and Many; Opinion; Opposition; Philosophy; Physics; Pleasure and Pain; Poetry; Principle; Progress; Prophecy; Prudence; Punishment; Quality; Quantity; Reasoning; Relation; Religion; Revolution; Rhetoric; Same and Other; Science; Sense; Sign and Symbol; Sin; Slavery; Soul; Space; State; Temperance; Theology; Time; Truth; Tyranny; Universal and Particular; Virtue and Vice; War and Peace; Wealth; Will; Wisdom; World.