Whereof one cannot speak, thereof one must be silent.

I am my world.

Not how the world is, but that it is, is the mystery.

How small a thought it takes to fill a life.

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.

Philosophy hasn't made any progress? - If somebody scratches the spot where he has an itch, do we have to see some progress? Isn't genuine scratching otherwise, or genuine itching itching? And can't this reaction to an irritation continue in the same way for a long time before a cure for the itching is discovered?

Don't think, but look! (PI 66)

Most of the propositions and questions to be found in philosophical works are not false but nonsensical.

Everything that can be thought at all can be thought clearly. Everything that can be said can be said clearly.