God forbids suicide, and is unwilling that his creatures should destroy themselves.

What we call strategy is mainly just crossing rivers on bridges and passing mountains though cols.

I do not know any reading more easy, more fascinating, more delightful than a catalogue.

Awaken people's curiosity. It is enough to open minds, do not overload them. Put there just a spark.

It is by acts and not by ideas that people live.

Never lend books, for no one ever returns them; the only books I have in my library are books that other folks have left me.

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.