One of the surest ways of making a friend and influencing the opinion of another is to give consideration to [his or her] opinion, let [him or her] sustain a feeling of importance.

Develop success from failures. Discouragement and failure are two of the surest stepping stones to success.

When the friendly jailer gave Socrates the poison cup to drink, the jailer said: "Try to bear lightly what needs must be." Socrates did. He faced death with a calmness and resignation that touched the hem of divinity.

So, to prevent fatigue and worry, the first rule is: Rest often. Rest before you get tired.

Remember that other people may be totally wrong. But they don't think so. Don't condemn them. Any fool can do that. Try to understand them. Only wise, tolerant, exceptional people even try to do that.

Our trouble is not ignorance, but inaction.

When dealing with people, remember you are not dealing with creatures of logic, but creatures of emotion.