Ludwig Wittgenstein

The Blue and Brown Books are two sets of notes taken during lectures conducted by Ludwig Wittgenstein between 1933 and 1935. They were mimeographed as two separated books and a few copies were circulated in a restricted circle during Wittgenstein's lifetime. The lecture notes from 1933–4 were bound in blue cloth and …

Remarks on the Foundations of Mathematics is a book of Ludwig Wittgenstein's notes on the philosophy of mathematics. It has been translated from German to English by G.E.M. Anscombe, edited by G.H. von Wright and Rush Rhees, and published first in 1956. The text has been produced from passages in various sources by …