Wittgenstein: To Follow a Rule (International Library of Philosophy series)

First edition, first impression.  xiv, 250, [2]pp.  Red cloth-covered boards with gilt titles to spine.  8vo.  Cloth a little rubbed and rounded on corners and spine ends.  Upper text block edge a little dust dulled.  Previous owner's name neatly inked on front paste down else internally neat, clean, bright and tight.  In its original glossy dust jacket, a little bumped along upper edge, slight shelf wear. 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.