Dillard

“There is but one truly serious philosophical problem and that is suicide. Judging whether life is or is not worth living amounts to answering the fundamental question of philosophy. All the rest — whether or not the world has three dimensions, whether the mind has nine or twelve categories — comes afterwards. These are games; one must first answer.”
― Albert Camus

“The philosopher treats a question; like an illness.”
― Ludwig Wittgenstein, Philosophical Investigations

“A picture held us captive. And we could not get outside it, for it lay in our language and language seemed to repeat it to us inexorably.”
― Ludwig Wittgenstein, Philosophical Investigations

“Reductio ad absurdum, which Euclid loved so much, is one of a mathematician's finest weapons. It is a far finer gambit than any chess play: a chess player may offer the sacrifice of a pawn or even a piece, but a mathematician offers the game.”
― G.H. Hardy, A Mathematician's Apology