“Human beings, in their natural state, are unpredictable, erratic, and unhappy. It is only once their animal instincts are controlled that they can be responsible, dependable, and content.”

“Look natural, that is the best way. Flowers, plants, and animals are all content with how they look—satisfied with nature's endowment. Only human beings are eager to change what nature has given them.”

“I have a responsibility as a human being to care for animals—including politicians.”

“The parent who sedulously endeavors to form the heart and enlarge the understanding of his child has given that dignity to the discharge of a duty, common to the whole animal world, that only reason can give. This is the parental affection of humanity, and leaves instinctive natural affection far behind.”

“What an immature, self-destructive, antiquated mischief is man! How obscure and gross his prancing and chattering on his little stage of evolution! How loathsome and beyond words boring all the thoughts and self-approval of his biological by-product! this half-formed, ill-conditioned body! this erratic, maladjusted mechanism of his soul: on one side the harmonious instincts and balanced responses of the animal, on the other the inflexible purpose of the engine, and between them man, equally alien from the being of Nature and the doing of the machine, the vile becoming!”

“Hope was an instinct only the reasoning human mind could kill. An animal never knew despair.”