Summary of before: https://en.wikipedia.org/wiki/Tractatus_Logico-Philosophicus https://en.wikipedia.org/wiki/Tractatus_Logico-Philosophicus Summary of after:

Summary of before: https://en.wikipedia.org/wiki/Tractatus_Logico-Philosophicus https://en.wikipedia.org/wiki/Tractatus_Logico-Philosophicus Summary of after: https://en.wikipedia.org/wiki/Philosophical_Investigations https://en.wikipedia.org/wiki/Philosophical_Investigations