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.

The price we are willing to pay for safety cannot be infinite. It is distasteful to put a price on human life, but the more we spend on safety, the less we will have for our other goals.

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.

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.