Hope you enjoy the following quotes written by Alexander Graham Bell :

"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. 'Every time you do so you will be certain to find something that you have never seen before. Of course it will be a little thing, but do not ignore it. Follow it up, explore all around it; one discovery will lead to another, and before you know it you will have something worth thinking about to occupy your mind. All really big discoveries are the results of thought." 
 

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

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

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

"Before anything else, preparation is the key to success."
 

"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."
 

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

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

"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.”
 

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

"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."
 

"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."

Written by Famous Author : Alexander Graham Bell 
Always Inventing: A Photobiography of Alexander Graham Bell

More Motivational Quotes:

Mark Twain

There are basically two types of people. People who accomplish things, and people who claim to have accomplished things. The first group is less crowded.  There is no sadder sight than a young pessimist.
 

Edward de Bono

Creativity is a great motivator because it makes people interested in what they are doing. Creativity gives hope that there can be a worthwhile idea. Creativity gives the possibility of some sort of achievement to everyone. Creativity makes life more fun and more interesting.
 

Mother Teresa

There is always the danger that we may just do the work for the sake of the work. This is where the respect and the love and the devotion come in - that we do it to God, to Christ, and that's why we try to do it as beautifully as possible.