The Atheist Blogger has a list of 101 atheist quotes. Here are a few of my favorites in that list:

A man is accepted into a church for what he believes and he is turned out for what he knows. – Samuel Clemens (Mark Twain)

Religion is regarded by the common people as true, by the wise as false, and by the rulers as useful. – Seneca the Younger

I still say a church steeple with a lightning rod on top shows a lack of confidence. – Doug McLeod

Since the Bible and the church are obviously mistaken in telling us where we came from, how can we trust them to tell us where we are going? – Anonymous

Two hands working can do more than a thousand clasped in prayer. – Anonymous

Blind faith is an ironic gift to return to the Creator of human intelligence. – Anonymous

What can be asserted without proof can be dismissed without proof. – Christopher Hitchens

On the first day, man created God. – Anonymous

I contend that we are both atheists. I just believe in one fewer god than you do. When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours. – Stephen Roberts

Give a man a fish and he will eat for a day; teach a man to fish and he will eat for a lifetime; give a man religion and he will die praying for a fish. – Anonymous

Calling Atheism a religion is like calling bald a hair color. – Don Hirschberg

God should be executed for crimes against humanity. – Bryan Emmanuel Gutierrez