Blake's "two contrary states of the human soul." The first collection shows childhood wonder and divine presence; the second, its systematic corruption by church, state, and industry. "The Tyger" and "The Lamb" work as contrasts. The chimney sweeper poems function as social indictment. "London" stands as the greatest short poem about urban alienation. Blake invented visionary poetry and the critique of industrial capitalism simultaneously, in language that sounds like hymns.

The case for it, the case against, and the rest of the canon open with Pro.