The prescription of the equality of human beings is not a description of an alleged actual equality among humans: it is a prescription of how we should treat human beings.

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.

Whatever the reason, for most of the present century, the literature and publicity of the old established [animal welfare] groups made a significant contribution to the prevailing attitude that dogs and cats and wild animals need protection, but other animals do not. Thus people came to think of "animal welfare" as something for kindly ladies who are dotty about cats, and not as a cause founded on basic principles of justice and morality.

At present scientists do not look for alternatives simply because they do not care enough about the animals they are using.

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

There is a growing movement called effective altruism. It's important because it combines both the heart and the head.

We are, quite literally, gambling with the future of our planet- for the sake of hamburgers