books.google.co.uk - Philosophy of Mathematics is an excellent introductory text. This student friendly book discusses the great philosophers and the importance of mathematics to their thought. It includes the following topics:* the mathematical image* platonism* picture-proofs* applied mathematics* Hilbert and Godel* knots...http://books.google.co.uk/books/about/Philosophy_of_Mathematics.html?id=31mEAGGHG2kC&utm_source=gb-gplus-sharePhilosophy of Mathematics