The Doors of Perception
Aldous Leonard Huxley
How to Solve It: A New Aspect of Mathematical Method
John H. Conway & György Pólya
Sri Aurobindo - Biography
K. R. Srinivasa Iyengar
The Ottoman Empire
Kenneth W. Harl
The Early Mathematical Manuscripts of Leibniz
Gottfried Wilhelm Freiherr von Leibniz
Cosmic Coincidences
John Gribbin & Martin J. Rees