Alexander Graham Bell
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.
Concentrate all your thoughts upon the work at hand. The sun’s rays do not burn until brought to a focus.
Before anything else, preparation is the key to success.
Sometimes we stare so long at a door that is closing that we see too late the one that is open.
A man, as a general rule, owes very little to what he is born with – a man is what he makes of himself.
The most successful men in the end are those whose success is the result of steady accretion.
The nation that secures control of the air will ultimately control the world.
Man is an animal which, alone among the animals, refuses to be satisfied by the fulfilment of animal desires.