"Our progress as a nation can be no swifter than our progress in education. The human mind is our fundamental resource."

"If we cannot end our differences, at least we can help make the world safe for diversity"

"If scientific discovery has not been an unalloyed blessing, if it has conferred on mankind the power not only to create but also to annihilate, it has at the same time provided humanity with a supreme challenge and a supreme testing"

"Those who dare to fail miserably can achieve greatly."

"We are under exercised as a nation. We look instead of play. We ride instead of walk. Our existence deprives us of the minimum of physical activity essential for healthy living."

"True happiness is the full use of your powers along lines of excellence in a life affording scope."

"I'm an idealist without illusions."

"To state the facts frankly is not to despair the future nor indict the past. The prudent heir takes careful inventory of his legacies and gives a faithful accounting to those whom he owes an obligation of trust."

"The best road to progress is freedom's road."

"The time to repair the roof is when the sun is shining."

"Sure it's a big job; but I don't know anyone who can do it better than I can."

"All free men, wherever they may live, are citizens of Berlin. And therefore, as a free man, I take pride in the words "Ich bin ein Berliner!"

"It might be said now that I have the best of both worlds: a Harvard education and a Yale degree."

"Let us never negotiate out of fear but let us never fear to negotiate."

"In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. I do not shrink from this responsibility -- I welcome it."

"The great enemy of the truth is very often not the lie -- deliberate, contrived, and dishonest -- but the myth -- persistent, persuasive, and unrealistic."

"No one has been barred on account of his race from fighting or dying for America, there are no white or colored signs on the foxholes or graveyards of battle."

"The energy, the faith, the devotion which we bring to this endeavor will light our country and all who serve it - and the glow from that fire can truly light the world"

"When written in Chinese, the word "crisis" is composed of two characters-one represents danger, and the other represents opportunity."

"The courage of life is often a less dramatic spectacle than the courage of the final moment; but it is no less a magnificent mixture of triumph and tragedy."

"Efforts and courage are not enough without purpose and direction."

"A nation which has forgotten the quality of courage which in the past has been brought to public life is not as likely to insist upon or regard that quality in its chosen leaders today - and in fact we have forgotten."

"Geography has made us neighbors. History has made us friends. Economics has made us partners, and necessity has made us allies. Those whom God has so joined together, let no man put asunder."

"Economic growth without social progress lets the great majority of people remain in poverty, while a privileged few reap the benefits of rising abundance."

"I have just received the following wire from my generous Daddy. It says, ''Dear Jack: Don't buy a single vote more than is necessary. I'll be damned if I am going to pay for a landslide.''"

"You can always go into another business. I have never taken a picture of an accountant."

"The only unchangeable certainty is that nothing is certain or unchangeable"

"The New Frontier I speak of is not a set of promises -- it is a set of challenges. It sums up not what I intend to offer the American people, but what I intent to ask of them."

"It's astonishing that a sophisticated nation like Canada has dragged its feet for so long while the rest of the world has adapted its copyright laws to the digital age. The digital music world is moving on - Canada must move with it, or its whole music culture will suffer."

"If we make peaceful revolution impossible, we make violent revolution inevitable."

"We believe that if men have the talent to invent new machines that put men out of work, they have the talent to put those men back to work"

"Tolerance implies no lack of commitment to one's own beliefs. Rather it condemns the oppression or persecution of others."

"If this nation is to be wise as well as strong, if we are to achieve our destiny, then we need more new ideas for more wise men reading more good books in more public libraries. These libraries should be open to all—except the censor. We must know all the facts and hear all the alternatives and listen to all the criticisms. Let us welcome controversial books and controversial authors. For the Bill of Rights is the guardian of our security as well as our liberty."

"If we are strong, our strength will speak for itself. If we are weak, words will be of no help."

"We want to be first; not first if, not first but; but first!"

"Modern cynics and skeptics... see no harm in paying those to whom they entrust the minds of their children a smaller wage than is paid to those to whom they entrust the care of their plumbing."

"Children are the world's most valuable resource and its best hope for the future"

"If we cannot end our differences at least we can make the world safe for diversity."

"Conformity is the jailer of freedom and the enemy of growth."

"With a good conscience our only sure reward, with history the final judge of deeds, let us go forth to lead the land we love, asking His blessing and His help, but knowing that here on earth God's work must truly be our own"

"The ignorance of one voter in a democracy impairs the security of all."

"Let us resolve to be masters, not the victims, of our history, controlling our own destiny without giving way to blind suspicions and emotions."

"Our problems are man-made, therefore they may be solved by man. No problem of human destiny is beyond human beings."

"As we express our gratitude, we must never forget that the highest appreciation is not to utter words, but to live by them."

"I look forward to a great future for America - a future in which our country will match its military strength with our moral restraint, its wealth with our wisdom, its power with our purpose."

"Too often we... enjoy the comfort of opinion without the discomfort of thought."

"In a very real sense, it will not be one man going to the moon it will be an entire nation. For all of us must work to put him there."

"The goal of education is the advancement of knowledge and the dissemination of truth."

"I don't think the intelligence reports are all that hot. Some days I get more out of the New York Times."

"I think 'Hail to the Chief' has a nice ring to it."