If you want knowledge, you must toil for it; if food, you must toil for it; and if pleasure, you must toil for it: toil is the law.

Know thyself, for through thyself only thou canst know God.

Science lives only in quiet places, and with odd people, mostly poor.

The art of drawing which is of more real importance to the human race than that of writing...should be taught to every child just as writing is.

No changing of place at a hundred miles an hour will make us one whit stronger, or happier, or wiser. There was always more in the world than man could see, walked they ever so slowly; they will see it no better for going fast. The really precious things are thought and sight, not pace. It does a bullet no good to go fast; and a man, if he be truly a man, no harm to go slow; for his glory is not at all in going, but in being.

A thing is worth what it can do for you, not what you choose to pay for it.

To follow art for the sake of being a great man, and therefore to cast about continually for some means of achieving position or attracting admiration, is the surest way of ending in total extinction.