General Philosophy

Stanford Encyclopedia of Philosophy
Please use this website to research any of the philosophers below.

The Basics

Plato on justice, rights, and the ideal State (hint: not a democracy)
Aristotle on justice, rights, and democracy
Hobbes on the Social Contract, especially regarding sovereignty, punishment, and the State of Nature
Locke on the Social Contract (but understand his foundations in empirical knowledge and natural theology, which grounds rights)
Rousseau on the Social Contract
Kant on rights, duties, and his formulation of morality encompassing both, The Categorical Imperative
Mill on democracy, utility, free speech, and the Harm Principle
Marx on justice, equality, societal values, revolution, and more
Rawls on a new, pluralist approach to the Social Contract and “justice as fairness,” including the Original Position / Veil of Ignorance, the First and Second principle of Justice, democracy, neo-Kantianism
Maslow on value, especially his Hierarchy of Needs
       
Advanced Study

de Beauvoir on ethics and gender
Berlin on ethics (especially pluralism) and politics
Dewey on moral and political pragmatism and democracy
Hayek on freedom
Hegel on Hegel
Hume on the Social Contract
Arendt on democracy and totalitarianism
bon morality and law
Dahl on democracy
Schumpeter on democracy
Kierkegaard on reason
Aquinas on Natural Law and Just War Theory
Popper on anti-Platonism
Sartre on freedom and ethics
Habermas on democracy and deliberation
Nozick (especially against Rawls) on rights, freedom, and the Social Contract
Foucault on rights and justice (especially concerning criminality and punishment)
Beccaria on criminal justice and punishment
Bentham on Utilitarianism
Rand on Objectivism, especially as it concerns morality and freedom