Nothing is more important for teaching us to understand the concepts we have than to construct fictitious ones.

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.

A wheel that can be turned though nothing else moves with it, is not a part of the mechanism.

The philosopher is not a citizen of any community of ideas, that is what makes him a philosopher.

Words are probes. Some reach very deep, some only to a little depth.

The human body is the best picture of the human soul.

Language disguises thought.