“I'm getting old, that's the thing! What's in me now won't be there anymore.”

“One of the main reasons people fail to reach their full potential is because they are unwilling to risk anything. They are fearful of losing, failing, or getting hurt and just want to do the things they believe will keep them safe.” 

“I do not believe in the doctrine of the greatest good of the greatest number. The only real, dignified, human doctrine is the greatest good of all.”

“Jesus Christ was the Master Realist when He urged men to prepare for death, which was certain to come. Do not worry, said the Lord Jesus, about the death of the body, but rather concern yourself with the eternal death of the soul.”

“To the Muslim world, we seek a new way forward, based on mutual interest and mutual respect. To those leaders around the globe who seek to sow conflict, or blame their society's ills on the West - know that your people will judge you on what you can build, not what you destroy. To those who cling to power through corruption and deceit and the silencing of dissent, know that you are on the wrong side of history; but that we will extend a hand if you are willing to unclench your fist.”

“How could America send men into space and still keep its black citizens in bondage?”

“I do not believe that civilization will be wiped out in a war fought with the atomic bomb. Perhaps two-thirds of the people of the Earth might be killed, but enough men capable of thinking, and enough books, would be left to start again, and civilization could be restored.”

“He went down trying not to look long at her, as though she were the sun, but he saw her, as one sees the sun, without looking.”

“I would like to suggest that you take responsibility for your joy and never again give anyone else the job of keeping you happy. You can control what you do, but you cannot control what other people do. So you may be unhappy a lot of the time if you depend on them as your source of joy. The psalmist David said that he encouraged himself in the Lord, and if he can do it, then we can do it too.”

“People are never able to outperform their self-image.”

“Civil Disobedience, mass or individual, is an aid to Constructive effort and is a full substitute for armed revolt. Training is necessary as well for Civil Disobedience as for armed revolt. Only the ways are different.… Training for military revolt means learning the use of arms, ending perhaps in the atomic bomb. For Civil Disobedience it means the Constructive Program.”

“...never [enter] into dispute or argument with another. I never saw an instance of one of two disputants convincing the other by argument. I have seen many, on their getting warm, becoming rude, & shooting one another. ... When I hear another express an opinion which is not mine, I say to myself, he has a right to his opinion, as I to mine; why should I question it? His error does me no injury, and shall I become a Don Quixote, to bring all men by force of argument to one opinion? ... There are two classes of disputants most frequently to be met with among us. The first is of young students, just entered the threshold of science, with a first view of its outlines, not yet filled up with the details & modifications which a further progress would bring to their knoledge. The other consists of the ill-tempered & rude men in society, who have taken up a passion for politics. ... Consider yourself, when with them, as among the patients of Bedlam, needing medical more than moral counsel. Be a listener only, keep within yourself, and endeavor to establish with yourself the habit of silence, especially on politics. In the fevered state of our country, no good can ever result from any attempt to set one of these fiery zealots to rights, either in fact or principle. They are determined as to the facts they will believe, and the opinions on which they will act. Get by them, therefore, as you would by an angry bull; it is not for a man of sense to dispute the road with such an animal.”

“It is this mythical, or rather symbolic, content of the religious traditions which is likely to come into conflict with science. This occurs whenever this religious stock of ideas contains dogmatically fixed statements on subjects which belong in the domain of science.”

“Every parent knows that delayed obedience is really disobedience.”

“The state of convenience lies in the hands of proper planning. When you know this, you will become a good planner; and when you become a good planner, you save your life from stress!”