I think rigid heterosexuality is a perversion of nature.

in all cultures, human beings - in order to be human - must understand the nonhuman.

Whatever advantages may have arisen, in the past, out of the existence of a specially favored and highly privileged aristocracy, it is clear to me that today no argument can stand that supports unequal opportunity or any intrinsic disqualification for sharing in the whole of life.

Where we choose to put our attention changes our brain, which in time can change how we see and interact with the world.

We are living beyond our means. As a people we have developed a life-style that is draining the earth of its priceless and irreplaceable resources without regard for the future of our children and people all around the world.

One of the most dangerous things that can happen to a child is to kill or torture an animal and get away with it.

The liberals have not softened their view of actuality to make themselves live closer to the dream, but instead sharpen their perceptions and fight to make the dream actuality.