Science and religion have been archenemies for some time now, with one on a quest for knowledge and truth, and the other seeking to fill a perceived void of meaning in lives. Logical inspection confirms the two systems are incompatible with one another, since science requires evidence for all claims, whereas religion insists on faith when there is no evidence whatsoever. But many do have both science and religion in their lives. How do they deal with the conflict? Stephen Jay Gould wrote in a 1997 essay on the non-overlapping magisteria, NOMA, that there actually is no conflict between science and religion: