Gratitude is a duty which ought to be paid, but which none have a right to expect.
People who know little are usually great talkers, while men who know much say little.
We should not teach children the sciences; but give them a taste for them.
The person who has lived the most is not the one with the most years but the one with the richest experiences.
The training of children is a profession, where we must know how to waste time in order to save it.
Every man has a right to risk his own life for the preservation of it.
