"Now, I say to you today my friends, even though we face the difficulties of today and tomorrow, I still have a dream. It is a dream deeply rooted in the American dream. I have a dream that one day this nation will rise up and live out the true meaning of its creed: - 'We hold these truths to be self-evident, that all men are created equal.'"
Speech at Civil Rights March on Washington, August 28, 1963
"I believe that unarmed truth and unconditional love will have the final word in reality. That is why right, temporarily defeated, is stronger than evil triumphant."
Giving the impression that the second quote is from the same speech.
So far as I can tell, the source for that quote is:
Accepting Nobel Peace Prize 10 Dec 64
The entire speech is at:
I refuse to accept the cynical notion that nation after nation must spiral down a militaristic stairway into the hell of thermonuclear destruction. I believe that unarmed truth and unconditional love will have the final word in reality. This is why right temporarily defeated is stronger than evil triumphant.