25 quotes
Nicht wie die Welt ist, ist das Mystische, sondern dass sie ist.
Tractatus Logico-Philosophicus (1922)
A tautology's truth is certain, a proposition's possible, a contradiction's impossible. (Certain, possible, impossible: here we have the first indication of the scale that we need in the theory of probability.)
Tractatus Logico-Philosophicus (1922)
The world and life are one.
Tractatus Logico-Philosophicus (1922)
Scepticism is not irrefutable, but obviously nonsensical, when it tries to raise doubts where no questions can be asked.
For doubt can exist only where a question exists, a question only where an answer exists, and an answer only where something can be said.
Tractatus Logico-Philosophicus (1922)
There is therefore really a sense in which in philosophy we can talk of a non-psychological I. The I occurs in philosophy through the fact that the "world is my world". The philosophical I is not the man, not the human body or the human soul of which psychology treats, but the metaphysical subject, the limit—not a part of the world.
Tractatus Logico-Philosophicus (1921)