Holmes Rolston III quotes:

Tom Regan's now classic Case for Animal Rights blends careful argument with intense moral concern. For two decades, where Regan has been taken seriously, animals have been better off and people have become better persons. This new edition is a welcome sign of this influence continuing.

Destroying species is like tearing pages out of an unread book, written in a language humans hardly know how to read, about the place where they live.

McIntosh is persuasive in his arguments that the scientific facts of evolution cannot stand alone ... science shows that historical evolution, whatever its contingencies, is itself on a trajectory of values development. McIntosh has well-researched his sources and integrated them with seminal insight.

The first lesson of evolution was one of conflict. The lesson now is one of kinship.

Perhaps we humans are cosmic dwarfs; perhaps we are molecular giants. But there is no denying our mid-scale complexity. We humans live neither at the range of the infinitely small, nor at that of the infinitely large, but we might well live at the range of the infinitely complex. We live at the range of the most caring; we ourselves might embody the most capacity for caring.

The splendors of earth do not simply lie in their roles as human resources, supports of culture, or stimulators of experience.