Sometimes one day in a difference place gives you more than ten years of a life at home.

We find it hard to picture to ourselves the state of mind of a man of older days who firmly believed that the Earth was the centre of the Universe, and that all the heavenly bodies revolved around it. He could feel beneath his feet the writhings of the damned amid the flames; very likely he had seen with his own eyes and smelt with his own nostrils the sulphurous fumes of Hell escaping from some fissure in the rocks. Looking upwards, he beheld ... the incorruptible firmament, wherein the stars hung like so many lamps.

We have drugs to make women speak, but none to keep them silent.

Of all the sexual aberrations, chastity is the strangest.

He flattered himself on being a man without any prejudices; and this pretension itself is a very great prejudice.

Ignorance and error are necessary to life, like bread and water.

True education is the ability to discern the difference between what you do know and what you don't.