Emerson's essays are lofty, and to comprehend and appreciate their witticism requires effort on the reader’s part.
Here's what he says of Love:
…
For it is to be considered that this passion of which we speak, though it begin with the young, yet forsakes not the old, or rather suffers no one who is truly its servant to grow old, but makes the aged participators of it not less than the tender maiden, though in a different and nobler sort.