Frege has the merit of ... finding a third assertion by recognising the world of logic which is neither mental nor physical.

It appeared to me obvious that the happiness of mankind should be the aim of all action, and I discovered to my surprise that there were those who thought otherwise.

The evolution of our spirit is blazed on the dark background of eternity by our individual wakes. Every person can, if he/she wishes, leave a more or less brilliant wake behind them.

Be scrupulously truthful, even if the truth is inconvenient, for it is more inconvenient when you try to conceal it.

If the West can claim superiority in anything, it is . . . in science and scientific technique.

I cannot escape from the conclusion that the great ages of progress have depended upon a small number of individuals of transcendent ability.

The observer, when he seems to himself to be observing a stone, is really, if physics is to be believed, observing the effects of the stone upon himself.