Those who make peaceful revolution impossible will make violent revolution inevitable.

President Kennedy said that those who make peaceful revolution impossible make violent revolution inevitable. I would say that the converse is true.

Those who dare to fail miserably can achieve greatly.

Those who make peaceful revolution impossible will make violent revolution inevitable."

[Remarks on the first anniversary of the Alliance for Progress, 13 March 1962]

Change is the law of life. And those who look only to the past or present are certain to miss the future.

Every revolution seems impossible at the beginning, and after it happens, it was inevitable.