“Of course to adhere to standards, to idealism, to vision in the face of immediate dangers takes great courage and takes self-confidence. But we also know that only those who dare to fail greatly, can ever achieve greatly.”

Day of Affirmation Address (1966)
Context: The second danger is that of expediency: of those who say that hopes and beliefs must bend before immediate necessities. Of course, if we must act effectively we must deal with the world as it is. We must get things done. But if there was one thing that President Kennedy stood for that touched the most profound feeling of young people around the world, it was the belief that idealism, high aspirations, and deep convictions are not incompatible with the most practical and efficient of programs — that there is no basic inconsistency between ideals and realistic possibilities, no separation between the deepest desires of heart and of mind and the rational application of human effort to human problems. It is not realistic or hardheaded to solve problems and take action unguided by ultimate moral aims and values, although we all know some who claim that it is so. In my judgment, it is thoughtless folly. For it ignores the realities of human faith and of passion and of belief — forces ultimately more powerful than all of the calculations of our economists or of our generals. Of course to adhere to standards, to idealism, to vision in the face of immediate dangers takes great courage and takes self-confidence. But we also know that only those who dare to fail greatly, can ever achieve greatly.