He who wishes to be rich in a day will be hanged in a year.
Our life is made by the death of others.
Not to appreciate life, all of life, is not to deserve it.
Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.
Men born in hot countries love the night because it refreshes them and have a horror of light because it burns them.
The mind that engages in subjects of too great variety becomes confused and weakened.