Alexander Graham Bell

"When one door closes another opens; but we so often look with regret upon the closed door that we do not see the ones open for us."

"Do not go so far ashore that you cannot return."

"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 sun's rays do not burn until brought to a focus."

"Leave the beaten track occasionally and dive into the woods."

"Discovery consists of seeing what everybody has seen and thinking what nobody has thought."

"Believe that life is worth living and your belief will help create the fact."

"Education is not the filling of a pail, but the lighting of a fire."

"To invent, you need a good imagination and a pile of junk."

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

"Life is, we believe, a lively process which forever must be going forward, not backward, not merely standing still."

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

"The true inventor is not the man who merely invents an idea but the one who puts it to practical use."

"We are of opinion that the very first step towards success in any occupation is to become interested in it."

"The patent system has done more for the advancement of civilization than any other institution."

"Do not let the same be done tomorrow which should be done today."

"The inventor tries to meet the demands of the world around him."

"Genius is one percent inspiration and ninety-nine percent perspiration."

"The seed of great discoveries is constantly being sown, but only in the prepared mind does it take root."

"Speech is power: speech is to persuade, to convert, to compel."

"Your life is shaped by the people you know and the things you read."

"The mind, once stretched by a new experience, never goes back to its original dimensions."

"Look the world straight in the eye."

"The only real limitation on your abilities is the level of your desires."

"Prepare yourself in every way to be worthy of the best."

"The telephone made us neighbors of the world."

"Stick to one thing and make it succeed."

"Human education should be the most noble of all undertakings."

"Keep your mind open to new ideas."

"The most profitable investment is in human beings."