The process of philosophizing, to my mind, consists mainly in passing from those obvious, vague, ambiguous things, that we feel quite sure of, to something precise, clear, definite, which by reflection and analysis we find is involved in the vague thing that we start from, and is, so to speak, the real truth of which that vague thing is a sort of shadow.

In fact the opposition of instinct and reason is mainly illusory. Instinct, intuition, or insight is what first leads to the beliefs which subsequent reason co…

I do not pretend to start with precise questions. I do not think you can start with anything precise. You have to achieve such precision as you can, as you go …

The conception of the necessary unit of all that is resolves itself into the poverty of the imagination, and a freer logic emancipates us from the straitwaistc…

Everything is self-evident.

Das hochste Leben ist Mathematik.

There is something to be said for every error; but, whatever may be said for it, the most important thing to be said about it is that it is erroneous.