“Man is said to be a reasoning animal. I do not know why he has not been defined as an affective or feeling animal. Perhaps that which differentiates him from other animals is feeling rather than reason. More often I have seen a cat reason than laugh or weep. Perhaps it weeps or laughs inwardly — but then perhaps, also inwardly, the crab resolves equations of the second degree.”
“Boo fell in at my side. He is the only ghost dog I have ever seen. Animals always move on. For some reason he had lingered more than a year at the abbey. Perhaps waiting for me.”
“Men are reasoning rather than reasonable animals.”
“Mother, recently I have discovered the one way in which human beings differ completely from other animals. Man has, I know, language, knowledge, principles, and social order, but don't all the other animals have them too, granted the difference of degree? Perhaps the animals even have religions. Man boasts of being the lord of all creation, but it would seem as if essentially he does not differ in the least from other animals. But, Mother, there was one way I thought of. Perhaps you won't understand. It's a faculty absolutely unique to man - having secrets. Can you see what I mean?”
“Man is the only animal that laughs and weeps; for he is the only animal that is struck with the difference between what things are, and what they ought to be.”
“On the outside, the man of today is carefully groomed, perhaps unnecessarily and over carefully clean; while inside he is dirtier than the dirtiest animal—whose anus is as clean as its mouth, provided said animal has not been "domesticated" by "civilized" man.”