The Doors of Perception and Heaven and Hell
Aldous Leonard Huxley
Pontifex
Volker Reinhardt
Metamathematics of Fuzzy Logic
Petr Hájek
Egoism in Nietsche and Rand
Stephen R. C. Hicks
The Forgotten Language: An Introduction to the Understanding ...
Erich Fromm
Dictionary of Psychology and Allied Sciences
M. S. Bhatia
Infinity and the Mind
Rudy Rucker