If we all think only of our own interests, we are headed for collective disaster - just look at what we are doing to our planet's climate.

All the particular moral judgments we intuitively make are likely to derive from discarded religious systems, from warped views of sex and bodily functions, or from customs necessary for the survival of the group in social and economic circumstances that now lie in the distant past.

To turn the other cheek is to teach would-be cheats that cheating pays.

Becoming a vegan is a sure way of completely avoiding participation in the abuse of farmed animals. Vegans are a living demonstration of the fact that we do not need to exploit animals for food.

If you go back in time you'll find tribes that were essentially only concerned with their own tribal members. If you were a member of another tribe, you could be killed with impunity.

If you earn a lot of money, you can give away a lot of money.

Hebrew word for "charity" tzedakah, simply means "justice" and as this suggests, for Jews, giving to the poor is no optional extra but an essential part of living a just life.