Daniel Dennett in The New York Times:

A bright is a person with a naturalist as opposed to a supernaturalist world view. We brights don't believe in ghosts or elves or the Easter Bunny — or God. We disagree about many things, and hold a variety of views about morality, politics and the meaning of life, but we share a disbelief in black magic — and life after death.
I am certainly a bright.

The time has come for us brights to come out of the closet.
See also The brights' Network. (via Arts & Letters Daily)

p. s. Das ist mir zu viel Trara. Ich nehme das Coming-out zurück und verziehe mich wieder auf's Örtchen: Mit diesen Brights stecke ich nicht unter einer Decke. Da bin ich lieber wieder ganz bescheiden ein Nihilist für mich allein.