The concepts of atheism and secular humanism are based on the supposition which God doesn't exist. As a result of this supposition, man is a result of random events and genetic mutations instead of a created being fashioned by a loving Creator to whom he is accountable. As God doesn't exist He can't be the ultimate standard to find out right and wrong, good and evil. In his place, Man serves as the standard for finding right and wrong and good and evil.