If anyone is crazy enough to want to kill a president of the United States, he can do it. All he must be prepared to do is give his life for the president's.

Political sovereignty is but a mockery without the means of meeting poverty and illiteracy and disease. Self-determination is but a slogan if the future holds no hope.

I am talking about genuine peace, the kind of peace that makes life on earth worth living, the kind that enables men and nations to grow and to hope and to build a better life for their children - not merely peace for Americans but peace for all men and women - not merely peace in our time but peace for all time.

I can assure you that every degree of mind and spirit that I possess will be devoted to the long-range interests of the United States and to the cause of freedom around the world.

In a time of turbulence and change, it is more true than ever that knowledge is power.

If art is to nourish the roots of our culture, society must set the artist free to follow his vision wherever it takes him.

Man is still the most extraordinary computer of all.