“Socially inferior animals are the ones that make the most strenuous, resourceful efforts to get to know their keepers. They prove to be the ones most faithful to them…it is a fact commonly known in the trade.”

“We commonly say in the trade that the most dangerous animal in a zoo is Man.”

“That vice has often proved an emancipator of the mind, is one of the most humiliating, but, at the same time, one of the most unquestionable facts in history.”

“One of the greatest weaknesses in most of us is our lack of faith in ourselves. One of our common failings is to depreciate our tremendous worth.”

“The idea was fantastically, wildly improbable. But like most fantastically, wildly improbable ideas it was at least as worthy of consideration as a more mundane one to which the facts had been strenuously bent to fit.”

“Most of us care about one another. Human beings have considerably more in common with one another than they do differences. One’s religion, political persuasion, family, financial and social status, or vocation does not hamper the common thread of personal decency running through most of humankind.”