Non cogitant, ergo non sunt.

I would give something to know for whose sake precisely those deeds were really done which report says were done for the fatherland.

I have never yet met anyone who did not think it was an agreeable sensation to cut tinfoil with scissors.

The ordinary man is ruined by the flesh lusting against the spirit; the scholar by the spirit lusting too much against the flesh.

Why does a suppurating lung give so little warning and a sore on the finger so much?

There is no greater impediment to progress in the sciences than the desire to see it take place too quickly.

There is no more important rule of conduct in the world than this: attach yourself as much as you can to people who are abler than you and yet not so very different that you cannot understand them.