Become more humble as the market goes your way.

Old books that have ceased to be of service should no more be abandoned than should old friends who have ceased to give pleasure.

Be quick to praise people. People like to praise those who praise them.

Approach each new problem not with a view of finding what you hope will be there, but to get the truth.

Never answer a critic, unless he's right.

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

Most of the successful people I've known are the ones who do more listening than talking.