The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.

The value of an idea lies in the using of it.

The greatest invention in the world is the mind of a child.

The reason a lot of people do not recognize opportunity is because it usually goes around wearing overalls looking like hard work.

We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy - sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.

Direct thought is not an attribute of feminity. In this, women are now centuries behind man.

The secret of success is focus of purpose.