Cheats prosper until there are enough who bear grudges against them to make sure they do not prosper.

If you earn a lot of money, you can give away a lot of money.

If we all think only of our own interests, we are headed for collective disaster - just look at what we are doing to our planet's climate.

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.

Knowing that we can control our own behaviour makes it more likely that we will.

...the proposed air force and army experiments were designed so that many animals would suffer and die without any certainty that this suffering and death would save a single human life or benefit humans in any way at all; but the same can be said of millions of their experiments performed each year in the United States alone.

It is easy for us to criticize the prejudices of our grandfathers, from which our fathers freed themselves. It is more difficult to distance ourselves from our own views, so that we can dispassionately search for prejudices among the beliefs and values we hold