Book References

By Friedrich Nietzsche

• The Birth of Tragedy, Or: Hellenism and Pessimism 
• Unfashionable Observations
• Human All-Too-Human, A Book for Free Spirits
• The Gay Science 
• Thus Spake Zarathustra, A Book for All and None (I found a free version here: http://books.google.com/books/about/Thus_Spake_Zarathustra.html?id=5IURAAAAYAAJ)

• The Antichrist, Curse on Christianity

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By Immanuel Kant

• Prolegomena to Any Future Metaphysics (Link: http://philosophy.eserver.org/kant-prolegomena.txt )

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By Martin Heidegger

• Plato's Doctrine of Truth (Link:http://www.stanford.edu/dept/relstud/faculty/sheehan/pdf/47PLATO.PDF)
• Being and Time (Link: http://www.clas.ufl.edu/users/burt/spliceoflife/beingandtime.pdf)

          By Richard Polt, on Heidegger:

• Heidegger: An Introduction

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By William B. Irvine

• A Guide to the Good Life: The Ancient Art of Stoic Joy