A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.
Men fight for liberty and win it with hard knocks. Their children, brought up easy, let it slip away again, poor fools. And their grandchildren are once more slaves.
Not far from here where we gather today is a symbol of freedom familiar to all Americans -- the Liberty Bell. When the Declaration of Independence was first read in public, the Liberty Bell was sounded in celebration, and a witness said: "It rang as if it meant something."
A mature person has the integrity to stand alone. And when a mature person gives love, he or she gives without any strings attached to it. When two mature persons are in love, one of the great paradoxes of life happens, one of the most beautiful phenomena: they are together and yet tremendously alone. They are together so much that they are almost one. Two mature persons in love help each other to become more free. There is no politics involved, no diplomacy, no effort to dominate. Only freedom and love.