Alexander Graham Bell

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

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

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

A man, as a general rule, owes very little to what he is born with - a man is what he makes of himself.

A man, as a general rule, owes very little to what he is born with -- a man is what he makes of himself.

The nation that secures control of the air will ultimately control the world.

A man, as a general rule, owes very little to what he is born with, a man is what he makes himself.

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

Sometimes we stare so long at a door that is closing that we see too late the one that is open.

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 that has opened for us.

Before anything else, preparation is the key to success.

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.

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

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

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

Neither the Army nor the Navy is of any protection, or very little protection, against aerial raids.

The day will come when the man at the telephone will be able to see the distant person to whom he is speaking.

The great advantage [the telephone] possesses over every other form of electrical apparatus consists in the fact that it requires no skill to operate the instrument.

When one door closes, another opens. But we often look so regretfully upon the closed door that we don’t see the one that has opened for us.

Don't keep forever on the public road, going only where others have gone and following one after the other like a flock of sheep. Leave the beaten track occasionally and dive into the woods.

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

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.

What this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to quit until he finds it.

Great discoveries and improvements invariably involve the cooperation of many minds. I may be given credit for having blazed the trail, but when I look at the subsequent developments I feel the credit is due to others rather than to myself.

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

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

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