Going to the opera, like getting drunk, is a sin that carries its own punishment with it."

"It is not so important to know everything as to know the exact value of everything, to appreciate what we learn, and to arrange what we know."

"One kernel is felt in a hogshead; one drop of water helps to swell the ocean; a spark of fire help to give light to the world. None are too small, too feeble, too poor to be of service. Think of this and act."

Goals help you overcome short-term problems.

Obstacles are those frightful things you see when you take your eyes off the goal.