Above all be of single aim; have a legitimate and useful purpose, and devote yourself unreservedly to it.

A man sooner or later discovers that he is the master-gardener of his soul, the director of his life.

All that you accomplish or fail to accomplish with your life is the direct result of your thoughts.

A man is not rightly conditioned until he is a happy, healthy, and prosperous being; and happiness, health, and prosperity are the result of a harmonious adjus…

Here was a problem, that I, a ten year old, could understand and I knew from that moment that I would never let it go. I had to solve it.

Fanaticism consists in redoubling your efforts when you have forgotten your aim.

We have perhaps a natural fear of ends. We would rather be always on the way than arrive. Given the means, we hang on to them and often forget the ends.