How to Solve It: A New Aspect of Mathematical Method
György Pólya
Historical Dictionary of Aesthetics
Dabney Townsend
An Encyclopedia of Swearing: The Social History of Oaths, Profanity, ...
Geoffrey Hughes
Popper’s Philosophy and Learning - Article
Zengchang Qin
How to Be Right
Greg Gutfeld
Meaning and Truth: Investigations in Philosophical Semantics
Joseph Keim Campbell & Michael O'Rourke & David Shier