Logic must look after itself. In a certain sense, we cannot make mistakes in logic.
Man has to awaken to wonder – and so perhaps do peoples. Science is a way of sending him to sleep again.
A philosopher always finds more grass to feed upon in the valleys of stupidity than on the arid heights of intelligence.
When one is frightened of the truth then it is never the whole truth that one has an inkling of.
A main cause of philosophical disease-an unbalanced diet: one nourishes one’s thinking with only one kind of example.
You must always be puzzled by mental illness. The thing I would dread most, if I became mentally ill, would be your adopting a common sense attitude; that you could take it for granted that I was deluded.
The difference between a good and a poor architect is that the poor architect succumbs to every temptation and the good one resists it.
Propositions show what they say: tautologies and contradictions show that they say nothing.
The aspects of a thing that are most important to us are hidden to us because of their simplicity and familiarity.
Concerning that which cannot be talked about, we should not say anything.
I am not interested in constructing a building, so much as in having a perspicuous view of the foundations of possible buildings.
We are asleep. Our Life is a dream. But we wake up sometimes, just enough to know that we are dreaming.
A tautology’s truth is certain, a proposition’s possible, a contradiction’s impossible.
At the core of all well-founded belief lies belief that is unfounded.
Only describe, don’t explain.
It’s impossible for me to say one word about all that music has meant to me in my life. How, then, can I hope to be understood?
The eternal life is given to those who live in the present.
Everything that can be thought at all can be thought clearly. Everything that can be said can be said clearly – Ludwig Wittgenstein.
I act with complete certainty. But this certainty is my own.
You can’t think decently if you’re not willing to hurt yourself.