Some say opportunity knocks only once, that is not true. Opportunity knocks all the time, but you have to be ready for it. If the chance comes, you must have the equipment to take advantage of it.

Actually, all education is self-education. A teacher is only a guide, to point out the way, and no school, no matter how excellent, can give you education. What you receive is like the outlines in a child’s coloring book. You must fill in the colors yourself.

Start writing, no matter what. The water does not flow until the faucet is turned on

Trade is much superior to piracy. You can rob and kill a man but once, but you can cheat him again and again.

A mind, like a home, is furnished by its owner, so if one's life is cold and bare he can blame none but himself. You have a chance to select from pretty elegant furnishings.

It is better to have no emotion when it is work. Do what needs to be done, and do it coolly.

Knowledge is like money: to be of value it must circulate, and in circulating it can increase in quantity and, hopefully, in value.