We have enslaved the rest of the animal creation, and have treated our distant cousins in fur and feathers so badly that beyond doubt, if they were able to formulate a religion, they would depict the Devil in human form.
The indifference, callousness and contempt that so many people exhibit toward animals is evil first because it results in great suffering in animals, and second because it results in an incalculably great impoverishment of the human spirit. All education should be directed toward the refinement of the individual's sensibilities in relation not only to one's fellow humans everywhere, but to all things whatsoever.

It is immoral for human beings to use other animals as the subjects of any experiments.Human beings and all animals have evolved from a single source and are, as such, all members of the same family.
It is clearly immoral for one species to view all other species as a resource, rather than as living beings with which they share a very close connection.
We often think that the human race is superior to all other animal species, and that this is what justifies our exploitation of them.
However, the belief that the human race exists apart from other species is a dangerous illusion that has long since been exposed by the discovery of the theory of evolution.Some say that the reason we are entitled to use other species for our benefit lies in the fact that human beings have superior intelligence. This overlooks the fact that intelligence is not the criteria upon which we should base moral decisions.
Sentience, the ability to experience and to suffer, is the quality that is important. Generally, we are already aware of this fact..
Now my friends, I am opposed to the system of society in which we live today, not because I lack the natural equipment to do for myself but because I am not satisfied to make myself comfortable knowing that there are thousands of my fellow men who suffer for the barest necessities of life. We were taught under the old ethic that man's business on this earth was to look out for himself. That was the ethic of the jungle; the ethic of the wild beast. Take care of yourself, no matter what may become of your fellow man. Thousands of years ago the question was asked; ''Am I my brother's keeper?'' That question has never yet been answered in a way that is satisfactory to civilized society.
Yes, I am my brother's keeper. I am under a moral obligation to him that is inspired, not by any maudlin sentimentality but by the higher duty I owe myself. What would you think me if I were capable of seating myself at a table and gorging myself with food and saw about me the children of my fellow beings starving to death..