I won't say 'See you tomorrow' because that would be like predicting the future, and I'm pretty sure I can't do that.

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.

How hard I find it to see what is right in front of my eyes!

We regard the photograph, the picture on our wall, as the object itself (the man, landscape, and so on) depicted there. This need not have been so. We could easily imagine people who did not have this relation to such pictures. Who, for example, would be repelled by photographs, because a face without color and even perhaps a face in reduced proportions struck them as inhuman.

If I have exhausted the justifications, I have reached bedrock and my spade is turned. Then I am inclined to say: 'This is simply what I do.

One of the most misleading representational techniques in our language is the use of the word 'I.'

Propositions show what they say: tautologies and contradictions show that they say nothing.