You must try harder. It is not easy to become sane.

Sheer egoism... Writers share this characteristic with scientists, artists, politicians, lawyers, soldiers, successful businessmen - in short, with the whole top crust of humanity.

Men are only as good as their technical development allows them to be.

Your worst enemy, he reflected, was your nervous system. At any moment the tension inside you was liable to translate itself into some visible symptom.

I think I exist,' he said wearily. 'I am conscious of my own identity. I was born, and I shall die. I have arms and legs. I occupy a particular point in space. No other solid object can occupy the same point simultaneously.

There are books that one reads over and over again, books that become part of the furniture of one's mind and alter one's whole attitude to life, books that one dips into but never reads through, books that one reads at a single sitting and forgets a week later.

Donkeys live a long time. None of you has ever seen a dead donkey.