Nietzsche: A Very Short Introduction (Very Short Introductions Book 34)

Hegel: A Very Short Introduction (Very Short Introductions Book 49)

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Kant: A Very Short Introduction (Very Short Introductions Book 50)

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Kierkegaard: A Very Short Introduction (Very Short Introductions Book 58)

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Schopenhauer: A Very Short Introduction (Very Short Introductions Book 62)

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Freud: A Very Short Introduction (Very Short Introductions Book 45)

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Wittgenstein: A Very Short Introduction (Very Short Introductions Book 46)

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Jung: A Very Short Introduction (Very Short Introductions Book 40)

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Marx: A Very Short Introduction (Very Short Introductions)

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Descartes: A Very Short Introduction (Very Short Introductions Book 30)

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Hume: A Very Short Introduction (Very Short Introductions Book 33)

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