If you then enquire, WHY HE DESIRES HEALTH, he will readily reply, BECAUSE SICKNESS IS PAINFUL.

If you push your enquiries farther, and desire a reason WHY HE HATES PAIN, it is impossible he can ever give any.

This is an ultimate end, and is never referred to any other object.
Perhaps to your second question, WHY HE DESIRES HEALTH, he may also reply, that IT IS NECESSARY FOR THE EXERCISE OF HIS CALLING.

If you ask, WHY HE IS ANXIOUS ON THAT HEAD, he will answer, BECAUSE HE DESIRES TO GET MONEY.

If you demand WHY?
IT IS THE INSTRUMENT OF PLEASURE, says he.
And beyond this it is an absurdity to ask for a reason.