This suggests that attempts to suppress religion are likely to be short-lived as human thought seems to be rooted to religious concepts, such as the existence of supernatural agents or gods, and the possibility of an afterlife or pre-life.' <a href="http://www.sciencedaily.com/releases/2011/07/110714103828.htm">http://www.sciencedaily.com/releases/2011/07/110714103828.htm</a> Experiments are the only means of knowledge at our disposal.