Eureka! I have found it! What I mean

To say is, not that Love is Idleness,

But that in Love such idleness has been

An accessory, as I have cause to guess.

Hard Labour's an indifferent go-between;

Your men of business are not apt to express

Much passion, since the merchant-ship, the Argo,

Conveyed Medea as her supercargo.