Early Greek Philosophy
Various
How to Solve It: A New Aspect of Mathematical Method
György Pólya
An Ontological and Epistemological Perspective of Fuzzy Set ...
I. Burhan Turksen
The Complete Guide to Learning a Language: How to Learn a Language ...
Gill James
Gregory of Nazianzus
Gregorio Nacianceno (santo) & Saint Gregory (of Nazianzus) & Brian Daley
The Philosophy of 'As If': A System of the Theoretical, Practical ...
Hans Vaihinger