“The importance of C.F. Gauss for the development of modern physical theory and especially for the mathematical fundament of the theory of relativity is overwhelming indeed; also his achievement of the system of absolute measurement in the field of electromagnetism. In my opinion it is impossible to achieve a coherent objective picture of the world on the basis of concepts which are taken more or less from inner psychological experience.”

“No matter how short or long your journey to your accomplishment is, if you don't begin you can't get there. Beginning is difficult, but unavoidable!”

“I don't allow myself to doubt myself even for a moment.”

“If there's anyone who can appear before Aslan without their knees knocking, they're either braver than most, or else just silly.”

“Effort only fully releases its reward after a person refuses to quit.”

“The whole idea of motivation is a trap. Forget motivation. Just do it.”

“RESPONSE TO POLITICAL SMEAR TO ROBERT ALLEN New Salem, June 21, 1836 DEAR COLONEL:—I am told that during my absence last week you passed through this place, and stated publicly that you were in possession of a fact or facts which, if known to the public, would entirely destroy the prospects of N. W. Edwards and myself at the ensuing election; but that, through favor to us, you should forbear to divulge them. No one has needed favors more than I, and, generally, few have been less unwilling to accept them; but in this case favor to me would be injustice to the public, and therefore I must beg your pardon for declining it. That I once had the confidence of the people of Sangamon, is sufficiently evident; and if I have since done anything, either by design or misadventure, which if known would subject me to a forfeiture of that confidence, he that knows of that thing, and conceals it, is a traitor to his country’s interest. I find myself wholly unable to form any conjecture of what fact or facts, real or supposed, you spoke; but my opinion of your veracity will not permit me for a moment to doubt that you at least believed what you said. I am flattered with the personal regard you manifested for me; but I do hope that, on more mature reflection, you will view the public interest as a paramount consideration, and therefore determine to let the worst come. I here assure you that the candid statement of facts on your part, however low it may sink me, shall never break the tie of personal friendship between us. I wish an answer to this, and you are at liberty to publish both, if you choose. Very respectfully, A. LINCOLN.”

“If you're alive, there's a purpose for your life.”

“Lack of direction, not lack of time, is the problem. We all have twenty-four hour days.”

“The books or the music in which we thought the beauty was located will betray us if we trust to them; it was not in them, it only came through them,and what came through them was longing.  These things—the beauty, the memory of our own past—are good images of what we really desire; but if they are mistaken for the thing itself they turn into dumb idols,breaking the hearts of their worshippers. For they are not the thing itself; they are only the scent of a flower we have not found, the echo of a tune we have not heard, news from a country we have never yet visited.”

“Communism forgets that life is individual. Capitalism forgets that life is social, and the kingdom of brotherhood is found neither in the thesis of communism nor the antithesis of capitalism but in a higher synthesis. It is found in a higher synthesis that combines the truths of both.”

“introduction, the opportunity to write the book came while I was in law school, the result of my election as the first African-American president of the Harvard”

“Whatever you dream, you can achieve it provided it is the will of God for you. Once the Lord Jehovah is in approval of it, just dream it; He placed the power in you to do it abundantly!”

“It's too easy to criticize a man when he's out of favour, and to make him shoulder the blame for everybody else's mistakes.”

“We must find time to stop and thank the people who make a difference in our lives.”