At 60 the sexual preoccupation, when it hits you, seems sometimes sharper, as if it were an elderly malady, like gout.

Keep going; never stop; sit tight; Read something luminous at night.

I find more and more that I am a man of the 1920s. I still expect something exciting. Drinks, animated conversation, gaiety: the uninhibited exchange of ideas.

They [the English] have a special word, "civil," for what is elsewhere merely ordinary politeness.

Only the curious will learn and only the resolute will overcome the obstacles to learning. The quest quotient has always excited me more than the intelligence quotient.

The product of the scientific imagination is a new vision of relations - like that of artistic imagination.

On the one hand, I have wanted to supply documentation on myself by including material relevant to my emotions and ideas in my youth; and, on the other, not to let myself down by publishing inferior material. My poetry comes under the latter head. My only advice to the reader is to skip any verse that he sees coming.