One's work may be finished someday, but one's education never.

For there are two distinct sorts of ideas: Those that proceed from the head and those that emanate from the heart.

Nothing makes time pass or shortens the way like a thought that absorbs in itself all the faculties of the one who is thinking. External existence is then like a sleep of which this thought is the dream. Under its influence, time has no more measure, space has no more distance.

D'Artagnan, my friend, thou art brave, thou art prudent, thou hast excellent qualities, but- women will destroy thee!" -D'Artagnan

On what slender threads do life and fortune hang.

It is only the dead who do not return.

There is neither happiness nor unhappiness in this world; there is only the comparison of one state with another. Only a man who has felt ultimate despair is capable of feeling ultimate bliss. It is necessary to have wished for death in order to know how good it is to live.....the sum of all human wisdom will be contained in these two words: Wait and Hope.