Quotes by Alexander Graham Bell

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

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

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.

The most successful men in the end are those whose success is the result of steady accretion... It is the man who carefully advances step by step, with his mind becoming wider and wider - and progressively better able to grasp any theme or situation - persevering in what he knows to be practical, and concentrating his thought upon it, who is bound to succeed in the greatest degree.

Before anything else, preparation is the key to success.

Man is an animal which, alone among the animals, refuses to be satisfied by the fulfilment of animal desires.

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.

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