Do not reveal, if liberty is precious to you; my face is the prison of love.
He who does not understand the supreme certainty of mathematics is wallowing in confusion.
Learning is the only thing that never disappoints us.
Good culture is born of a good disposition; and since the cause is more to be praised than the effect, I will rather praise a good disposition without culture, than good culture without the disposition.
The moment is timeless.
If you do not rest on the good foundation of nature, you will labour with little honor and less profit.