In Mohism, morality is not defined by tradition, but rather by a constant moral guide that parallels utilitarianism. Traditionalism is inconsistent, and man-kind need an extra-traditional guide to identify which traditions are acceptable. The moral guide must then promote and encourage social behaviors that maximise general utility.
Belief in the heavens as a divine force (Tian) who know the immoral acts of man, who can punish and is then a force to encourage moral righteousness. Belief in spirits is at best vague; against elaborate funeral ceremonies, defined as a waste of resources.
Mohism Several articles on various aspects of this philosophical tradition, from a Daoist perspective. http://www.hku.hk/philodep/ch/Mohism.htm
The Xiao-Qu Chapter of the Mo Zi Text, draft translation and extensive commentary on this passage from the key work of Mohism, which is attributed to the dialecticians of the Later Mohist school. By Patrick Edwin Moran. http://www.wfu.edu/~moran/mozi.html
Mohism Extensive article by Chris Fraser, with bibliography. From the Stanford Encyclopedia of Philosophy. http://plato.stanford.edu/entries/mohism/