Aristotle on who can be happy

“It is to be expected, then, that we do not say that either a cow or a horse or any other animal is at all happy, for none of them are able to share in such an activity.

It is because of this too that a child is not happy either: he is not yet apt to do such things, on account of his age. …

As we said, both complete virtue and a complete life are required: many reversals and all manner of fortune arise in the course of life, and it is possible for someone who is particularly thriving to encounter ...