A country is as strong, really, as its citizens. And I think that mental and physical health - mental and physical vigor - go hand in hand.

And is not peace, in the last analysis, basically a matter of human rights -- the right to live out our lives without fear of devastation – the right to breathe air as nature provided it -- the right of future generations to a healthy existence?" (John F. Kennedy, June 10, 1963, American University speech)

The most ideal approach to advance is the way of opportunity.

If an American, because his skin is dark, cannot eat lunch in a restaurant open to the public, if he cannot send his children to the best public school available, if he cannot vote for the public officials who represent him, if, in short, he cannot enjoy the full and free life which all of us want, then who among us would be content to have the color of his skin changed and stand in his place? Who among us would then be content with the counsels of patience and delay?

The life of the arts is far from an interruption, a distraction, in the life of a nation, is close to the center of a nation's purpose-and is a test of the quality of a nations' civilization.

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

We stand today on the edge of a new frontier.