“Look for God, suggests my Guru. Look for God like a man with his head on fire looks for water.”

The source is actually a 1945 book by Bruce Marshall, The World, The Flesh, and Father Smith, in which he says, "...the young man who rings the bell at the brothel is unconsciously looking for God."
Misattributed

Source: Storm Born

As quoted in To Rise from Earth (1996) by Wayne Lee; some websites quote him as saying "I looked and looked and looked but I didn't see God." on 14 April 1961, a couple days after his historic flight, but the authenticity of such statements have been disputed; Colonel Valentin Petrov stated in 2006 http://www.interfax-religion.ru/orthodoxy/?act=interview&div=73&domain=1 that the cosmonaut never said such words, and that the quote originated from Nikita Khrushchev's speech at the plenum of the Central Committee of the CPSU about the state's anti-religion campaign, saying "Gagarin flew into space, but didn't see any god there." Gagarin himself was a member of the Russian Orthodox Church.
As quoted in What's Missing Inside You? (2006) by Paul Schlieker, p. 17
Disputed
Variant: No I didn't see God. I looked and looked but I didn't see God.

The Humanist interview (2012)
Context: If it were up to me, I would not define myself by the absence of something; "theist" is a believer, so with "atheist" you’re defining yourself by the absence of something. I think human beings work on yes, not on no. … humanist is a great term. …except that humanism sometimes is not seen as inclusive of spirituality. To me, spirituality is the opposite of religion. It’s the belief that all living things share some value. So I would include the word spiritual just because it feels more inclusive to me. Native Americans do this when they offer thanks to Mother Earth and praise the interconnectedness of “the two-legged and the four, the feathered and the clawed,” and so on. It’s lovely. … because it’s not about not believing. It’s about rejecting a god who looks like the ruling class.

Source: Let It Come Down (1952), p. 231

Outrageous
Song lyrics, Surprise (2006)

Source: The Faceless Ones

Source: God: The Failed Hypothesis (2007), Chapter 4: 'Cosmic Evidence', p.128-129
Context: We have yet to encounter an observable astronomical phenomenon that requires a supernatural element to be added to a model in order to describe the event... Observations in cosmology look just as they can be expected to look if there is no God.