Definition of Atheism

"Atheism may be defined as the mental attitude which unreservedly accepts the supremacy of reason and aims at establishing a lifestyle and ethical outlook verifiable by experience and the scientific method, independent of all arbitrary assumptions of authority and creeds."
Madalyn Murray O'Hair 1919 - 1995

quedula says: I think this would be an even better definition of humanism. Although I cannot think of anyone doing evil deeds in the name of atheism (unlike religion), I am sure that there are plenty of atheists who never give reason & ethics a second thought.