John F. Kennedy: “For the unity of freedom has never relied on uniformity of opinion.”

For we seek not the worldwide victory of one nation or system but a worldwide victory of man.

Today we still welcome those winds of change--and we have every reason to believe that our tide is running strong.

There is no longer any reason why American children should suffer from polio, diphtheria, whooping cough, or tetanus.

If at times our actions seem to make life difficult for others, it is only because history has made life difficult for us all.