“A Conformist is a man who declares, "It's true because others believe it" - but an Individualist is NOT a man who declares, "It's true because I believe it."
An Individual declares, "I believe it because I see in reason that it is true.”

2014, Address to European Youth (March 2014)
Context: None of us can know for certain what the coming days will bring in Ukraine, but I am confident that eventually those voices -- those voices for human dignity and opportunity and individual rights and rule of law -- those voices ultimately will triumph. I believe that over the long haul, as nations that are free, as free people, the future is ours. I believe this not because I’m naïve, and I believe this not because of the strength of our arms or the size of our economies, I believe this because these ideals that we affirm are true; these ideals are universal.

p. 5729 http://www.lordmeher.org/index.jsp?pageBase=page.jsp&nextPage=5729
Lord Meher (1986)

Pope Urban VIII on Private Revelation http://www.medjugorje.org/purban.htm (2001).
Whether or not Urban VIII said this is debated. He did make a public statement about private revelations and their dissemination in the Catholic Church in his Constitution, Sanctissimus Dominus Noster of 1625-03-13.
Misattributed quotes

Responding to audience questions during a speech in Detroit (1898); as recounted in Living My Life (1931), p. 207; quoted by Annie Laurie Gaylor in Women Without Superstition, p. 382
Context: Ladies and gentlemen, I came here to avoid as much as possible treading on your corns. I had intended to deal only with the basic issue of economics that dictates our lives from the cradle to the grave, regardless of our religion or moral beliefs. I see now that it was a mistake. If one enters a battle, he cannot be squeamish about a few corns. Here, then, are my answers: I do not believe in God, because I believe in man. Whatever his mistakes, man has for thousands of years past been working to undo the botched job your God has made.
As to killing rulers, it depends entirely on the position of the ruler. If it is the Russian Czar, I most certainly believe in dispatching him to where he belongs. If the ruler is as ineffectual as an American President, it is hardly worth the effort. There are, however, some potentates I would kill by any and all means at my disposal. They are Ignorance, Superstition, and Bigotry — the most sinister and tyrannical rulers on earth. As for the gentleman who asked if free love would not build more houses of prostitution, my answer is: They will all be empty if the men of the future look like him.

As quoted in Perceive This! : How to Get Everything You Want Out of Life by Changing Your Perceptions (2004) by Kevin A. Martin, Ch. 9, No Bar Too High!, p. 64
Context: Somehow, I can't believe that there are any heights that can't be scaled by a man by a man who knows the secret of making dreams come true. The special secret it seems to me is summarized in four C's. They are Curiosity, Courage, Confidence and Constancy. And the greatest of all is Confidence. When you believe in a thing, believe in it all the way, implicitly and unquestionably.

The Chasm: The Future Is Calling (Part One) (2003–2009)

Speech (12 January 1968) http://www.cuba.cu/gobierno/discursos/1968/esp/f120168e.html

Petronius, as depicted in the novel, speaking to Marcus Vinicius,<!-- entirely fictional character, NOT the historical figure. --> in Ch. 1
Quo Vadis (1895)
Context: Pliny declares, as I hear, that he does not believe in the gods, but he believes in dreams; and perhaps he is right. My jests do not prevent me from thinking at times that in truth there is only one deity, eternal, creative, all-powerful, Venus Genetrix. She brings souls together; she unites bodies and things. Eros called the world out of chaos. Whether he did well is another question; but, since he did so, we should recognize his might, though we are free not to bless it.

Source: The Lost Symbol