The Blue and Brown Books

s/t: Preliminary Studies for the Philosophical Investigations

These works, as the subtitle makes clear, are unfinished sketches for Philosophical Investigations, possibly the most important influential philosophical work of modern times. The Blue Book is a set of notes dictated to Witgenstein's Cambridge students in 1933-34: the Brown Book was a draft for what eventually became the growth of the 1st part of Philosophical Investigations. This book reveals the germination growth of the ideas which found their final expression in his later work. It's indispensable therefore to students of Witgenstein's thought to all those who wish to study at 1st-hand the mental processes of a thinker who fundamentally changed the course of modern philosophy.