“A man must believe in himself and his judgment if he expects to make a living at this game. That is why I don’t believe in tips. If I buy stocks on Smith’s tip, I must sell those same stocks on Smith’s tip.” 

 

“The recognition of our own mistakes should not benefit us any more than the study of our successes. But there is a natural tendency in all men to avoid punishment. When you associate certain mistakes with a licking, you do not hanker for a second dose, and, of course, all stock-market mistakes wound you in two tender spots – your pocketbook and your vanity.”

…“One of the most helpful things that anybody can learn is to give up trying to catch the last eighth or the first. These two are the most expensive eighths in the world. They have cost stock traders, in the aggregate, enough millions of dollars to build a concrete highway across the continent.”