Watson, ... if I can get a mechanism which will make a current of electricity vary in its intensity, as the air varies in density when a sound is passing through it, I can telegraph any sound, even the sound of speech.

America is a country of inventors, and the greatest of inventors are the newspaper men.

There cannot be mental atrophy in any person who continues to observe, to remember what he observes, and to seek answers for his unceasing hows and whys about things.

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

When one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us.

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

The telephone will be used to inform people that a telegram has been sent.