the spirit of opium

Religious distress is at the same time the expression of real distress and the protest against real distress. Religion is the sigh of the oppressed creature, the heart of a heartless world, just as it is the spirit of a spiritless situation. It is the opium of the people. The abolition of religion as the illusory happiness of the people is required for their real happiness. The demand to give up the illusion about its condition is the demand to give up a condition which needs illusions.
—  Karl Marx, Critique of Hegel’s Philosophy of Right, 1843-4

It was the radiance
of an opium dream

An airy spirit lifting vision

More wildly divine
than the fantasies
which hovered
about the slumbering souls
of the daughters
of Delos

—  Edgar