At university I had an acquaintance who was a philosophy major. His comment on Wittgenstein was: "it feels like the Tractatus is what he believes, and the Philo

At university I had an acquaintance who was a philosophy major. His comment on Wittgenstein was: "it feels like the Tractatus is what he believes, and the Philosophical Investigations is what he can prove." Highly recommend "On Certainty" by Wittgenstein, very short read.