Health, when it returns after a long absence, affords us a very sensible satisfaction; but is seldom regarded as a subject of vanity, because it is shared with such vast numbers.
The reason, why pride is so much more delicate in this particular than joy, I take to be, as follows.

In order to excite pride, there are always two objects we must contemplate, viz.

the cause or that object which produces pleasure; and self, which is the real object of the passion.

But joy has only one object necessary to its production, viz.
that which gives pleasure; and though it be requisite, that this bear some relation to self, yet that is only requisite in order to render it agreeable; nor is self, properly speaking, the object of this passion.
Since, therefore, pride has in a manner two objects, to which it directs our view; it follows, that where neither of them have any singularity, the passion must be more weakened upon that account, than a passion, which has only one object.

Upon comparing ourselves with others, as we are every moment apt to do, we find we are not in the least distinguished; and upon comparing the object we possess, we discover still the same unlucky circumstance.