Our problem in money-making or government affairs is how to remain properly venturesome and experimental without making fools of ourselves.

Don't try to be a jack of all investments. Stick to the field you know best.

When beggars and shoeshine boys, barbers and beauticians can tell you how to get rich it is time to remind yourself that there is no more dangerous illusion than the belief that one can get something for nothing.

Get to know yourself. Know your own failings, passions, and prejudices so you can separate them from what you see. Know also when you actually have thought through to the nature of the thing with which you are dealing and when you are not thinking at all... Knowing yourself and knowing the facts, you can judge whether you can change the situation so it is more to your liking. If you cannot--or if you do not know how to improve on things--then discipline yourself to the adjustments that will be necessary.

Don't try to buy at the bottom and sell at the top. It can't be done except by liars.

Unless each man produces more than he receives, increases his output, there will be less for him than all the others.

Two things are bad for the heart - running up stairs and running down people.