We come now to the question: what is a priori certain or necessary, respectively in geometry (doctrine of space) or its foundations? Formerly we thought everything; nowadays we think nothing. Already the distance-concept is logically arbitrary; there need be no things that correspond to it, even approximately.

Thinking like we (always) have is what got us where we are. It is not going to get us where we are going.

God gave me the stubbornness of a mule and a fairly keen scent.

The number of natural hypothesis that can explain any given phenomena is infinite.

My passionate sense of social justice and social responsibility has always contrasted oddly with my pronounced lack of need for direct contact with other human beings and human communities. I am truly a 'lone traveler' and have never belonged to my country, my home, my friends, or even my immediate family, with my whole heart; in the face of all these ties, I have never lost a sense of distance and a need for solitude.

But love brings much happiness - much more so than pining brings pain.

The true measure of a man is the degree to which he has managed to subjugate his ego.