1. Are we to make True Happiness one and the same thing with Welfare or Prosperity and therefore within the reach of the other living beings as well as ourselves?
There is certainly no reason to deny well-being to any of them as long as their lot allows them to flourish unhindered after their kind.
Whether we make Welfare consist in pleasant conditions of life, or in the accomplishment of some appropriate task, by either account it may fall to them as to us. For certainly they may at once be pleasantly placed and engaged about some function that lies in their nature: take for an instance such living beings as have the gift of music; finding themselves well-off in other ways, they sing, too, as their nature is, and so their day is pleasant to them.
And if, even, we set Happiness in some ultimate Term pursued by inborn tendency, then on this head, too, we must allow it to animals from the moment of their attaining this Ultimate: the nature in them comes to a halt, having fulfilled its vital course from a beginning to an end.