Atheist messages have hit the third largest city in the country.

"In the beginning, man created God," read ads posted on 25 Chicago buses.

The slogan "espouses the idea that man created God as well as all religions, and encourages public and critical examination of the merits of religious belief," according to Indiana Atheist Bus Campaign.

"In my opinion, this is a great message to put out there," said Reba Boyd Wooden, executive director of Center for Inquiry, an organization that promotes secularism. "Too many people think that you have to be religious to be a moral person. They don't know they have a choice. They think that it is a given that there is a god, that everyone believes there is a god, and if you don't believe in god you are a bad person. We secular humanists know that is not true."

The ads in South Bend state "You can be good without God."