For me the most interesting part are the experiments with apes and monkeys and the examples of their behaviour, that proof the continuity between human morality and animal conduct. I find less interesting the philosophical part. A good start point for a more thorough research. I hope that future DNA analysis will show the genetic basis of morality in general as well as religion preferences (an elaborate form of morality).I believe that religion preferences are genetically based (or biased) and, for example, the semitic people must have some genetic make-up which make them more prone to monotheistic faith whereas this idea seems less atractive to chinese or japanese . It would explain the oddity of jewish creed in the ancient Middle East.It would be interesting to explore from a genetic point of view the morality in other species very different of monkeys , apes and us like vampires, that share food (blood) with mates in need (similar a give an alm) and punish defectors, and social insects .Perhaps there are common DNA sequences involved.Since an organism is a society of cells perhaps DNA analysis of Volvox can give us a clue.