Alexander Graham Bell

"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."

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

"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."