Philosophy aims at the logical clarification of thoughts. Philosophy is not a body of doctrine but an activity. A philosophical work consists essentially of elucidations.

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

To think that you are not following a rule is to follow a rule.

What is left over if I subtract the fact that my arms goes up from the fact that I raise my arm?

It seems to me that, in every culture, I come across a chapter headed 'Wisdom.' And then I know exactly what is going to follow: 'Vanity of vanities, all is vanity.'

That which cannot be said must not be said. That which cannot be said, one must be silent thereof.

A main cause of philosophical disease-an unbalanced diet: one nourishes one's thinking with only one kind of example.