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.

Fear is a far more dominant force in human behaviour than euphoria - I would never have expected that or given it a moment's thought before, but it shows up in the data in so many ways.

A kid is something precious, and you want to protect it and keep it fun. I'm not a dad, but I've seen people and how they behave with their kids.