The moral sense perhaps affords the best and highest distinction between man and the lower animals.

There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.

A naked man on a naked horse is a fine spectacle. I had no idea how well the two animals suited each other.

I believe man . . . in the same predicament with other animals.

Besides love and sympathy, animals exhibit other qualities connected with the social instincts which in us would be called moral.

A man can live and be healthy without killing animals for food; therefore, if he eats meat, he participates in taking animal life merely for the sake of his appetite. And to act so is immoral.