Happiness in intelligent people is the rarest thing I know.

The world is independent of my will.

I accept chaos, I'm not sure whether it accepts me.

The more we learn of the true nature of non-human animals, especially those with complex brains and corresponding complex social behaviour, the more ethical concerns are raised regarding their use in the service of man—whether this be in entertainment, as ‘pets,’ for food, in research laboratories or any of the other uses to which we subject them.