The Cambridge Dictionary of Philosophy
Robert Audi
Idealism the Philosophy of the Matrix - The True Nature of Matter
Harun Yayha
The Hidden Worlds
Sandra Ingerman & Katherine Wood
Stop Guessing: The 9 Behaviors of Great Problem Solvers
Nat Greene
Knowledge Representation
Arthur B. Markman
The Language of Mathematics: Making the Invisible Visible
Keith J. Devlin
Mathematica® in Action
S. Wagon