Not my favorite person, but:
When you get to the end of all the light you know and it's time to step into the darkness of the unknown, faith is knowing that one of two things shall happen: either you will be given something solid to stand on, or you will be taught how to fly. - Edward Teller
Note that Teller is considered agnostic or an atheist by many. "Faith" in this quote may be anything. I see it as faith in oneself, belief in your ability to do.
Here is the only quote I could find about his religious views. Not that I looked incredibly long or hard, and I am sure there is more out there:
Religion was not an issue in my family; indeed, it was never discussed. My only religious training came because the Minta required that all students take classes in their respective religions. My family celebrated one holiday, the Day of Atonement, when we all fasted. Yet my father said prayers for his parents on Saturdays and on all the Jewish holidays. The idea of God that I absorbed was that it would be wonderful if He existed: We needed Him desperately but had not seen Him in many thousands of years. - Edward Teller (2002). Memoirs: A Twentieth Century Journey In Science And Politics. Basic Books. p. 32. ISBN 978-0-7382-0778-0.
Thus, the solid footing or being taught to fly has to come from something other than a deity, who has not been seen for lo, these thousands of years.