Graph Structures for Knowledge Representation and Reasoning: ...
Pierre Marquis & Madalina Croitoru & Sebastian Rudolph & Gem Stapleton
C.S. Lewis Essay Collection & Other Short Pieces
C. S. Lewis
How Close Are We?
Dave Hunt
Geometric Algebra for Computer Science: An Object-Oriented Approach ...
Leo Dorst & Daniel Fontijne & Stephen Mann
The Meaning of Happiness
Alan W. Watts
Man and Superman: A Comedy and a Philosophy
George Bernard Shaw