Full Idea
I believe myself to have found, on all essential points, the final solution of the problems. ….and this work shows how little is achieved when these problems are solved.
Gist of Idea
This work solves all the main problems, but that has little value
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], Pref)
Book Reference
Wittgenstein,Ludwig: 'Tractatus Logico-Philosophicus (Pears)', ed/tr. Pears,D. /McGuinness,B. [RKP 1961], p.4
A Reaction
This is LW's deep pessimism about the value of philosophy, right from the start. You can only idolise LW if you agree with him on this.