Quote

There are thoughts we must not think.

My thought is me: that is why I cannot stop thinking. I exist because I think I cannot keep from thinking.

No, no, you're not thinking; you're just being logical.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.

Thought means life, since those who do not think so do not live in any high or real sense. Thinking makes the man.

Never be afraid to sit a while and think.

A thought is an idea in transit.

There is nothing so unthinkable as thought, unless it be the entire absence of thought.