Hegel: A Very Short Introduction (Very Short Introductions)
Nietzsche: A Very Short Introduction (Very Short Introductions)
Kierkegaard: A Very Short Introduction (Very Short Introductions)
Kant: A Very Short Introduction (Very Short Introductions)
Heidegger: A Very Short Introduction (Very Short Introductions)
Wittgenstein: A Very Short Introduction (Very Short Introductions)
Foucault: A Very Short Introduction (Very Short Introductions)
Existentialism: A Very Short Introduction (Very Short Introductions)
Quantum Theory: A Very Short Introduction (Very Short Introductions)