One alone does not help, but rather he who unites with many at the right moment.

Beware of dissipating your powers; strive constantly to concentrate them.

Live dangerously and you live right.

There is nothing more frightful than ignorance in action.

A vain man can never be utterly ruthless: he wants to win applause and therefore he accommodates himself to others

Oh happy he who still can hope in our day to breathe the truth while plunged in seas of error! What we don't know is really what we need, and what we know is of no use to us whatever!

No skill or art is needed to grow old; the trick is to endure it.