The Marriage of Heaven and Hell Quotes by William Blake: Context & Meanings

“What is now proved was once only imagined.”

Blake’s proverb compresses a recurring imaginative pattern: possibilities can exist first as conceived ideas before later work, discovery or demonstration makes some of them real or provable.

Source note: The Marriage of Heaven and Hell, “Proverbs of Hell,” represented by Project Gutenberg #45315 at printed page 16. Gutenberg regularizes the line to “imagined”; Blake’s engraved text is often transcribed with historical spelling and punctuation. The proverb is part of Blake’s deliberately paradoxical infernal-wisdom sequence, not a literal claim that every imagined thing will eventually be proved.

“He who desires but acts not breeds pestilence.”

Unacted desire can turn stagnant; the line pushes toward action rather than indefinite wishing.

Source note: “Proverbs of Hell.”

“The road of excess leads to the palace of wisdom.”

The proverb provocatively suggests that excess can teach limits through direct experience, though it is not a simple instruction to pursue excess.

Source note: The Marriage of Heaven and Hell, “Proverbs of Hell”; Blake presents the line as a deliberately paradoxical aphorism about experience and limits.

“No bird soars too high if he soars with his own wings.”

Ambition is defended when it grows from one’s own capacity rather than borrowed status or imitation.

Source note: “Proverbs of Hell.”

“If the doors of perception were cleansed every thing would appear to man as it is, Infinite.”

Blake imagines habitual perception as a filter that narrows reality; cleansing it would reveal a less limited world.

Source note: The Marriage of Heaven and Hell, Plate 14; Blake’s prose-poetic argument about the limits and cleansing of perception.