I would encourage every American to walk as often as possible. It's more than healthy; it's fun.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

If sometimes our great artists have been the most critical of our society, it is because their sensitivity and their concern for justice, which must motivate any true artist, makes him aware that our nation falls short of its highest potential. I see little of more importance to the future of our country and our civilization than full recognition of the place of the artist.

As far as the job of President goes, its rewarding and I've given before this group the definition of happiness for the Greeks. I'll define it again: the full use of your powers along lines of excellence. I find, therefore, that the Presidency provides some happiness.

There can be no progress if people have no faith in tomorrow.

We must seek, above all, a world of peace; a world in which peoples dwell together in mutual respect and work together in mutual regard.

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)