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.
Alexander Graham BellConcentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.
Alexander Graham BellA man, as a general rule, owes very little to what he is born with - a man is what he makes of himself.
Alexander Graham Bell