I must plunge into the water of doubt again and again

"It is necessary to be given the prop that all elementary props are given." This is not necessary because it is even impossible. There is no such prop! That all elementary props are given is SHOWN by there being none having an elementary …

Logic takes care of itself; all we have to do is to look and see how it does it.

It seems to me as good as certain that we cannot get the upper hand against England. The English — the best race in the world — cannot lose! We, however, can lose and shall lose, if not this year then next year. The thought that our race …

I work quite diligently and wish that I were better and smarter. And these both are one and the same.

One often makes a remark and only later sees how true it is.

Don't get involved in partial problems, but always take flight to where there is a free view over the whole single great problem, even if this view is still not a clear one.