Heaven goes by favour. If it went by merit, you would stay out and your dog would go in.
- Mark Twain

A dog is the only thing on earth that will love you more than you love yourself.
- Josh Billings

If you pick up a starving dog and make him prosperous, he will not bite you; that is the principal difference between a dog and a man.
- Mark Twain

To his dog, every man is Napoleon; hence the constant popularity of dogs. - Aldous Huxley

Man is a dog's ideal of what God should be.
- Holbrook Jackson

The more I see of men, the more I admire dogs.
- Jeanne-Marie Roland