If he cannot cure himself, nor relieve himself of his trouble, his life is in danger: he will neither be cared for in bed, nor fed in a prison.
Their neglect of their fellows arises as much from the weakness of their intellect as from their lack of resources.

Still, the degrees of intimacy common among men are not unknown to the animals.

They have friendships of habit and of choice; friendships neighborly, and friendships parental.

In comparison with us, they have feeble memories, sluggish feelings, and are almost destitute of intelligence; but the identity of these faculties is preserved to some extent, and our superiority in this respect arises entirely from our understanding.
It is our strength of memory and penetration of judgment which enable us to multiply and combine the acts which our social instinct impels us to perform, and which teaches us how to render them more effective, and how to distribute them justly.

The beasts who live in society practise justice, but are ignorant of its nature, and do not reason upon it; they obey their instinct without thought or philosophy.