The natural scientists of the previous age knew less than we do and believed they were very close to the goal: we have taken very great steps in its direction and now discover we are still very far away from it. With the most rational philosophers an increase in their knowledge is always attended by an increased conviction of their ignorance.

How might letters be most efficiently copied so that the blind might read them with their fingers?

Nowadays beautiful women are counted among the talents of their husbands.

Reading means borrowing.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.

A donkey appears to me like a horse translated into Dutch.

There are people who possess not so much genius as a certain talent for perceiving the desires of the century, or even of the decade, before it has done so itself.