“It is hard to fail, but it is worse never to have tried to succeed.”
“We can have no ’50-50′ allegiance in this country. Either a man is an American and nothing else, or he is not an American at all.”
“To educate a person in the mind but not in morals is to educate a menace to society.”
“It behooves every man to remember that the work of the critic is of altogether secondary importance, and that, in the end, progress is accomplished by the man who does things.”
“Keep your eyes on the stars, and your feet on the ground.”
“It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood.”
“The best executive is the one who has sense enough to pick good men to do what he wants done, and self-restraint to keep from meddling with them while they do it.”
“The only man who never makes a mistake is the man who never does anything.”
“Do what you can, where you are, with what you have.”
“Great thoughts speak only to the thoughtful mind, but great actions speak to all mankind.”

Theodore Roosevelt Quotes :
“Believe you can and you’re halfway there.”
“The most important single ingredient in the formula of success is knowing how to get along with people.”
“No one cares how much you know until they know how much you care.”
“The only limit to our realization of tomorrow will be our doubts of today.”
“I am only an average man, but by George, I work harder at it than the average man.”
“Speak softly and carry a big stick; you will go far.”
“Do what you can, with what you have, where you are.”
“Far better is it to dare mighty things, to win glorious triumphs, even though checkered by failure… than to rank with those poor spirits who neither enjoy nor suffer much, because they live in a gray twilight that knows not victory nor defeat.”
“Courtesy is as much a mark of a gentleman as courage.”
“The first requisite of a good citizen in this Republic of ours is that he shall be able and willing to pull his own weight.”