Atheism (n.) is not a belief. its principles are not a faith.
Atheism (n.) is not based on any claim that it can prove there is no deity. it places the burden on the faithful, who do after all make very large claims for themselves and their religions.
Atheism (n.) is related to the notion that we have just one life to live and is the only sure way to regard all our fellow creatures as brothers and sisters.
Atheism (n.) does not offer any right to go around looking superior. it is merely the throwing off the infancy of the species.
Atheism's (n.) strange logic is captured in the joke: 'I'm an atheist' 'I see, protestant or catholic atheist''.
Atheism (n.) is the idea that this world is all that we have, and that our duty is to one another to make the very most and best of it.
Atheism (n.) is the most rational position on the grounds that, since it is obviously inconceivable that all religions can be right, it is most reasonable to conclude that they are all wrong.