The primary cause of unhappiness is never the situation but your thoughts about it.

Find the thing you do well and do it again and again for the rest of your life.

I'm doing many different things to prepare for the inevitable failure of one of them.

Ultimately a genuine leader is not a searcher for consensus but a molder of consensus.

Learning never exhausts the mind.

The gratification comes in the doing, not in the results.

I do not think it worth while to wait for enjoyment until there is some real opportunity for it.

The great tragedy of life is not that men perish, but that they cease to love.

The shoe that fits one person pinches another; there is no recipe for living that suits all cases.

There’s not a word yet for old friends who’ve just met.

We are all of us obliged... to nurse a few little follies in ourselves.

Knowledge is limited. Imagination encircles the world.