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

When you look at food as an ethical issue in the Christian tradition, you don't find very much about it. You don't find, as you do in the Jewish or Islamic or Hindu traditions, a lot of restrictions saying you can eat this but you can't eat that. But what you do find is the idea that gluttony is a sin and that it's something that we ought to be ashamed of.

I'm a Utilitarian, so I don't see the rule against lying as absolute; it's always subject to some overriding utility which may prevent its exercise.

Remember that not everyone is as strong as you are. Be mindful of human weakness, and of the fact that it may be more important, in the long run, to get many people taking steps in the right direction than to have fewer achieving the ideal.

Of course, infanticide needs to be strictly legally controlled and rare - but it should not be ruled out, any more than abortion.

What one generation finds ridiculous, the next accepts; and the third shudders when it looks back on what the first did.

Christianity is our foe. If animal rights is to succeed, we must destroy the Judeo-Christian religious tradition.