As we realize that more and more things have global impact, I think we're going to get people increasingly wanting to get away from a purely national interest.

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.

I believe that in this new world that we live in, we often have a responsibility, you know, to actually go beyond the thou shalt nots - that is, the not harming others - and say we can help others and we should be helping others.

If penicillin had been judged by its toxicity to guinea pigs, it might never have been used by man.

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

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

Unfortunately for ethical egoism, the claim that we will all be better off if every one of us does what is in his or her own interest is incorrect. This is shown by what are known as "prisoner's dilemma" situations, which are playing an increasingly important role in discussions of ethical theory... At least on the collective level, therefore, egoism is self-defeating - a conclusion well brought out by Parfit in his aforementioned Reasons and Persons.