Knowledge is not simply another commodity. On the contrary. Knowledge is never used up. It increases by diffusion and grows by dispersion.

The desire of knowledge like the thirst of riches increases ever with the acquisition of it.

Take from the philosopher the pleasure of being heard and his desire for knowledge ceases.

The greater our knowledge increases the more our ignorance unfolds.

We know accurately only when we know little with knowledge doubt increases.

Jealousy lives upon doubts. It becomes madness or ceases entirely as soon as we pass from doubt to certainty.

As knowledge increases wonder deepens.

A rock pile ceases to be a rock pile the moment a single man contemplates it bearing within him the image of a cathedral.

The satirist shoots to kill while the humorist brings his prey back alive and eventually releases him again for another chance.

Home life ceases to be free and beautiful as soon as it is founded on borrowing and debt.