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The Blue and Brown Books

Preliminary Studies for the Philosophical Investigations

Ludwig Wittgenstein

These works, as the subtitle makes clear, are unfinished sketches for Philosophical Investigations, among the m

logic, mathematics

The Road to Reality

A Complete Guide to the Laws of the Universe

Roger Penrose

Roger Penrose, one of the most accomplished scientists of our time, presents the only comprehensive and compreh

astronomy, cosmology, mathematics, physics, quantum, relativity