Or like an opiate, which brings troubled rest,

Or none; or like—like nothing that I know

Except itself;—such is the human breast;

A thing, of which similitudes can show

No real likeness,—like the old Tyrian vest

Dyed purple, none at present can tell how,

If from a shell-fish or from cochineal.[774]So perish every Tyrant's robe piece-meal!