When all else fails, philosophize.

One thought alone preoccupies the submerged mind of Empire: how not to end, how not to die, how to prolong its era. By day it pursues its enemies. It is cunning and ruthless, it sends its bloodhounds everywhere. By night it feeds on images of disaster: the sack of cities, the rape of populations, pyramids of bones, acres of desolation.

...the program of scientific experimentation that leads you to conclude that animals are imbeciles is profoundly anthropocentric. It values being able to find your way out of a sterile maze, ignoring the fact that if the researcher who designed the maze were to be parachuted into the jungles of Borneo, he or she would be dead of starvation in a week...If I as a human being were told that the standards by which animals are being measured in these experiments are human standards, I would be insulted.

His mouth opens. From inside him comes a slow stream, without breath, without interruption. It flows up through his body and out upon me; it passes through the cabin, through the wreck; washing the cliffs and shores of the island, it runs northward and southward to the ends of the earth. Soft and cold, dark and unending, it beats against my eyelids, against the skin of my face.

In a world of chance is there a better and a worse? We yield to a stranger's embrace or give ourselves to the waves; for the blink of an eyelid our vigilance relaxes; we are asleep; and when we awake, we have lost the direction of our lives. What are these blinks of an eyelid, against which the only defence is an eternal and inhuman wakefulness? Might they not be the cracks and chinks through which another voice, other voices, speak in our lives? By what right do we close our ears to them? (Susan Barton)

Children all over the world consort quite naturally with animals. They don't see any dividing line. That is something they have to be taught, just as they have to be taught it is all right to kill and eat them.

Pain is truth; all else is subject to doubt.