The appeal of the cat lies in the very fact that she has formed no close bond with [man], that she has the uncompromising independence of a tiger or a leopard while she is hunting in his stables and barns: that she still remains mysterious and remote when she is rubbing herself gently against the legs of her mistress or purring contentedly in front of the fire.

It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.

All the advantages that man has gained from his ever-deepening understanding of the natural world that surrounds him, his technological, chemical and medical progress, all of which should seem to alleviate human suffering... tends instead to favor humanity's destruction.

Man appears to be the missing link between anthropoid apes and human beings.

A man sufficiently gifted with humor is in small danger of succumbing to flattering delusions about himself, because he cannot help perceiving what a pompous ass he would become if he did.

The bond with a dog is as lasting as the ties of this earth can ever be.

The truth about an animal is far more exciting and altogether more beautiful than all the myths woven about it.