The river of my title is a river of DNA, a river of information, not a river of bones and tissues

Evolution is as much a fact as the heat of the sun.

DNA is ROM. It can be read millions of times over, but only written to once - when it is first assembled the birth of the cell in which it resides.

Let us try to teach generosity and altruism, because we are born selfish. Let us understand what our own selfish genes are up to, because we may then at least have the chance to upset their designs, something that no other species has ever aspired to do.

Be warned that if you wish, as I do, to build a society in which individuals cooperate generously and unselfishly towards a common good, you can expect little help from biological nature. Let us try to teach generosity and altruism, because we are born selfish.

The human psyche has two great sicknesses: the urge to carry vendetta across generations, and the tendency to fasten group labels on people rather than see them as individuals. Abrahamic religion gives strong sanction to both-and mixes explosively with both. Only the willfully blind could fail to implicate the divisive force of religion in most, if not all, of the violent enmities in the world today.

Jesus was not content to derive his ethics from the scriptures of his upbringing. He explicitly departed from them. [...] Since a principal thesis of this chapter is that we do not, and should not, derive our morals from scripture, Jesus has to be honoured as a model for that very thesis.