The Medieval Craft of Memory: An Anthology of Texts and Pictures
Mary Carruthers & Jan M. Ziolkowski
A theory of natural philosophy
Boscovich, Ruggero Giuseppe, 1711-1787
PLP An introduction to mathematical proof
Seckin Demibras, Andrew Rechnitzer
Modern Man in Search of a Soul
C.G. Jung, W. S. Dell, Cary F. Baynes
A Theory of Fun for Game Design
Raph Koster