As stated at The Reason Project:
“Made by Mammals” is an unyet published editorial project by Andy Marlow, an English graphic designer based in Madrid. Images were created to accompany and emphasize quotes taken mainly from leading intellectuals such as Richard Dawkins, Sam Harris, Christopher Hitchens and Daniel Dennett who criticize religion and its role in modern society.
The main aim of the book is to provoke thought, reflection and rational debate on religion.
The most thought-provoking image for me was this one:
I suspect someone in Sedalia is seething right now.
(via Heaving Dead Cats)