Experience is devoid of the cherry-picking that we find in studies.

Please, don’t drive a school bus blindfolded.

As countries get rich they start increasing education and the very educated people tend to not like trial and error, because they think they're obligated to use the body of knowledge they have.

You are rich if and only if money you refuse tastes better than money you accept.

Also, it's good to have more than one profession, in case your own profession goes out of style. A Wall Street trader who's also a belly dancer will do a lot better than a trader who winds up driving a taxi.

You never win an argument until they attack your person.

A mistake is not something to be determined after the fact, but in the light of the information until that point.