I do not know what I think until I write it.

Do not do unto others as you expect they should do unto you. Their tastes may not be the same.

All problems are finally scientific problems.

No man who is occupied in doing a very difficult thing, and doing it very well, ever loses his self-respect.

The churches must learn humility as well as teach it.

The medieval doctors of divinity who did not pretend to settle how many angels could dance on the point of a needle cut a very poor figure as far as romantic credulity is concerned beside the modern physicists who have settled to the billionth of a millimetre every movement and position in the dance of the electrons. Not for worlds would I question the precise accuracy of these calculations or the existence of electrons (whatever they may be). The fate of Joan is a warning to me against such heresy.

Nationalism must now be added to the refuse pile of superstitions. We are now citizens of the world, and the man who divides the race into elect Irishmen and reprobate foreign devils (especially Englishmen) had better live on the Blaskets where he can admire himself without disturbance.