Profound ignorance makes a man dogmatical; he who knows nothing thinks he can teach others what he just now has learned himself; whilst he who knows … - Jean de La Bruyère

À mesure que la faveur et les grands biens se retirent d'un homme, ils laissent voir en lui le ridicule qu'ils couvraient, et qui y était sans que personne s'en aperçût.

A fool is an automaton, a machine with springs which turn him about always in one manner, and preserve his equilibrium. He is ever the same, and never changes. If you have seen him once you have seen him at every moment and period of his life. He is at best but as the lowing ox or the whistling blackbird. He is fixed and obstinate, I may say, by nature. What appears least in him is his soul; that has neither activity nor energy; it reposes.

A man is rich whose income is larger than his expenses, and he is poor if his expenses are greater than his income.