Our answer is the world's hope; it is to rely on youth. The cruelties and the obstacles of this swiftly changing planet will not yield to obsolete dogmas and outworn slogans. It cannot be moved by those who cling to a present which is already dying, who prefer the illusion of security to the excitement and danger which comes with even the most peaceful progress. This world demands the qualities of youth: not a time of life but a state of mind, a temper of the will, a quality of imagination, a predominance of courage over timidity, of the appetite for adventure over the life of ease...

Only those who dare to fail greatly can ever achieve greatly.

We should, I believe, beware of the pitfalls described by Taine: 'Imagine a man who sets out on a voyage equipped with a pair of spectacles that magnify things to an extraordinary degree. A hair on his hand, a spot on the tablecloth, the shifting fold of a coat, all will attract his attention; at this rate, he will not go far, he will spend his day taking six steps and will never get out of his room.' We have to get out of this room.

What is objectionable, what is dangerous, about extremists is not that they are extreme, but that they are intolerant. The evil is not what they say about their cause, but what they say about their opponents.

I think we can end the divisions within the United States. What I think is quite clear is that we can work together in the last analysis. And that what has been going on with the United States over the period of that last three years, the divisions, the violence, the disenchantment with our society, the divisions - whether it's between blacks and whites, between the poor and the more affluent, or between age groups, or in the war in Vietnam - that we can work together. We are a great country, an unselfish country and a compassionate country. And I intend to make that my basis for running.

Each nation has different obstacles and different goals, shaped by the vagaries of history and of experience. Yet as I talk to young people around the world I am impressed not by the diversity but by the closeness of their goals, their desires and their concerns and their hope for the future.

Tragedy is a tool for the living to gain wisdom, not a guide by which to live.