Not a tenth of us who are in business are doing as well as we could if we merely followed the principles that were known to our grandfathers.

Mistakes occur when a man is over-worked or over-confident.

Most persons who indulge in second thought don't do much thinking when the subject is presented for first thought.

Once you have sold a customer, make sure he is satisfied with your goods. Stay with him until the goods are used up or worn out. Your product may be of such long life that you will never sell him again, but he will sell you and your product to his friends.

Blow your own horn loud. If you succeed, people will forgive your noise; if you fail, they'll forget it.

To make yourself understood you have to think plain and write plain.

If you're naturally kind, you attract a lot of people you don't like.