A man of sense is never discouraged by difficulties; he redoubles his industry and his diligence, he perseveres and infallibly prevails at last.
Act the part and you will become the part.
Aim at the sun and you may not reach it; but your arrow will fly far higher than if you had aimed at an object on a level with yourself.
All that we are is the result of what we have thought.
An important project was begun, a bishop quoted an ancient sage as saying, "If our thoughts and hopes are elsewhere, it is impossible for us to set our faces steadily toward the work required of us."
Beware lest you lose the substance by grasping at the shadow.
Alexander Graham Bell
Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.
Concentration is the ability to think about absolutely nothing when it is absolutely necessary.
Ralph Waldo Emerson
Concentration is the secret of strength.