Psychologically I should say that a person becomes an adult at the point when he produces more than he consumes or earns more than he spends. This may be at the age of eighteen, twenty-five, or thirty-five. Some people remain unproductive and dependent children forever and therefore intellectually and emotionally immature.

No discovery of modern psychology is, in my opinion, so important as its scientific proof of the necessity of self-sacrifice (or discipline) to self-realization and happiness.

If you wish to make a man your enemy, tell him simply, 'You are wrong.' This method works every time.

Fear is nature's warning signal to get busy.

While one person hesitates because he feels inferior, the other is busy making mistakes and becoming superior.

To celebrate the heart of Christmas is to forget ourselves in the service of others.

Psychologically I should say that a person becomes an adult at the point when he produces more than he consumes or earns more than he spends. This may be at the age of eighteen, twenty-five, or thirty-five. Some people remain unproductive and dependent children forever and therefore intellectually and emotionally immature.