The most successful men in the end are those whose success is the result of steady accretion.

The achievement of one goal should be the starting point of another.

I have heard articulate speech produced by sunlight I have heard a ray of the sun laugh and cough and sing! … I have been able to hear a shadow, and I have even perceived by ear the passage of a cloud across the sun's disk.

One day every major city in America will have a telephone.

Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.

Don't keep forever on the public road, going only where others have gone. Leave the beaten track occasionally and dive into the woods. You will be certain to find something you have never seen before. Of course it will be a little thing, but do not ignore it. One discovery will lead to another, and before you know it, you will have something worth thinking about to occupy your mind, and really big discoveries are the result of thought.

Great discoveries and improvements invariably involve the cooperation of many minds.