An Enigma

"Seldom we find," says Solomon Don Dunce,
    "Half an idea in the profoundest sonnet.
Through all the flimsy things we see at once
    As easily as through a Naples bonnet —
    Trash of all trash! — how can a lady don it?
Yet heavier far than your Petrarchan stuff—
Owl-downy nonsense that the faintest puff
    Twirls into trunk-paper the while you con it."
And, veritably, Sol is right enough.
The general Petrarchanities are arrant
Bubbles — ephemeral and so transparent —
    But this is, now, — you may depend upon it —
Stable, opaque, immortal — all by dint
Of the dear names that lie concealed within 't.