Die Metaphysik der Sitten

An enquiry concerning human understanding

David Hume

An essay concerning human understanding, 1690

John Locke

Two treatises on civil government

John Locke

Philosophische Untersuchungen

Ludwig Wittgenstein

Il Principe

Niccolò Machiavelli

A theory of justice

John Rawls

The trial and death of Socrates.

Plato

Also sprach Zarathustra

Friedrich Nietzsche

On the genealogy of morals. Ecce Homo

Friedrich Nietzsche

Fröhliche Wissenschaft

Friedrich Nietzsche

Phänomenologie des Geistes

Georg Wilhelm Friedrich Hegel

The Structure of Scientific Revolutions

Thomas S. Kuhn