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.
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.
Before anything else, preparation is the key to success.
A man, as a general rule, owes very little to what he is born with - a man is what he makes of himself
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.
Sometimes we stare so long at a door that is closing that we see too late the one that is open.
Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.