I am coming more and more to the conviction that the necessity of our geometry cannot be demonstrated, at least neither by, nor for, the human intellect.

You know that I write slowly. This is chiefly because I am never satisfied until I have said as much as possible in a few words, and writing briefly takes far more time than writing at length.

I am begining to look more and more like my miserable imitators.

I have had my results for a long time: but I do not yet know how I am to arrive at them.

It's impossible to be more flat-chested than I am.

Ninja is super-ambitious - more than I am.