Peter Singer

More often there's a compromise between ethics and expediency.

We should aim for our children to be good people, and to live ethical lives that manifest concern for others as well as for themselves.

We see things like reciprocity which are fairly central to our view of ethics. But if you're talking about a set of worked-out rules on what we are supposed to do then, yes, it is a human product.

I have no neighbours other than animals and Joshua Trees.

That is the definition of equal justice under law: everyone gets a fair shot, everyone pays their fair share, and everyone plays by the same set of rules.

The argument about zoning and the presidency of Nigeria is like the philosophical argument of the egg or the hen. Who is older through the evolutionary process, who came first?