The 2nd Scientific American Book of Mathematical Puzzles & Diversions
Martin Gardner
Pessimism: Philosophy, Ethic, Spirit
Joshua Foa Dienstag
Dimensional Analysis
J. C. Gibbings
The Book of Leadership
Anthony Gell
Self-Knowledge - How sell do you really know yourself?
Mark Manson
A Language for Psychosis: Psychoanalysis of Psychotic States
Paul Williams