Wittgenstein

First edition, first impression.  [x], 156pp.  Green cloth-covered boards, silver lettering on the spine. 8vo.  Cloth a little pushed at corners and spine ends.  Previous owner's name neatly inked on front paste down else internally neat, bright, clean and tight.  In its original dust jacket, bumped on edges, rubbed on corners, rubbed and minor chipping on spine ends, shelf worn. Ludwig Wittgenstein (1889-1951) was an Austrian philosopher concerned mostly with logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language.  Wittgenstein taught at Cambridge University for twenty years but published only one book during his lifetime.  His Philosophical Investigations, voted by American philosophy students as the most important book of 20th philosophy, was compiled from his notes and manuscripts after his death.