Just because something doesn't do what you planned it to do doesn't mean it's useless.

Before you reject an idea, find at least five good things about it.

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.

We shall have no better conditions in the future if we are satisfied with all those which we have at present.

The doctor of the future will give no medicine, but will involve the patient in the proper use of food, fresh air and exercise

When there's no experimenting there's no progress. Stop experimenting and you go backward. If anything goes wrong, experiment until you get to the very bottom of the trouble.

All bibles are man-made.