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.

My major concern about leaving enhancement to the marketplace is that then the rich will be able to buy themselves genetically superior children and the poor will not - sharpening the class divisions we have now. That problem could be overcome if, genetic enhancement were available to all, subsidized by the state - and that would, over time, have benefits for society as well.

If governments did not mislead their citizens so often, there would be less need for secrecy, and if leaders knew they could not rely on keeping the public in the dark about what they are doing, they would have a powerful incentive to behave better.

We should give the same respect to the lives of animals as we do to the lives of humans.

By ceasing to rear and kill animals for food, we can make so much extra food available for humans that, properly distributed, it would eliminate starvation and malnutrition from this planet. Animal Liberation is Human Liberation too.

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

Scholars have long dreamed of a universal library containing everything that has ever been written.