John F. Kennedy

"Nothing is impossible to those who will try."

"Privilege has its obligations."

"The future will be determined by those who have the courage to shape it."

"We must not let our rulers load us with perpetual debt."

"When written in Chinese, the word opportunity is composed of two characters, one danger and one chance."

"It is the nature of man to resist tyranny."

"Where there is a will, there is a way. This is the spirit upon which America was founded."

"Ideas are far more powerful than guns. We don't let our people have guns. Let us change the idea."

"The work of a generation is what we do now."

"In this world of change, nothing is more important than hope."

"Forgiveness is not weakness; it is strength."

"To be patient is to be the master of time."

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

"Courage is grace under pressure."

"We are not here on this Earth to just take care of ourselves. Our responsibility is to help the next generation."

"The only thing necessary for the triumph of evil is for good men to do nothing."

"Ask not what your country can do for you. Ask what you can do for your country."

"We choose to go to the Moon not because it is easy, but because it is hard."

"Change is the law of life. Those who look only to the past or present are certain to miss the future."

"The future is not something which enters into us from outside. We create it from within ourselves."

"Forgive your enemies, but never forget their names."

"A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people."

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

"The most important office is that of citizen."

"There are risks and costs to any program of action. But they are far less than the long-range risks and costs of comfortable inaction."

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

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

"We dare not forget today that we are the heirs of that first revolution."

"Do you realize the responsibility I carry? I'm the only person standing between Richard Nixon and the White House."

"Mankind must put an end to war, or war will put an end to mankind."