Method in the Madness

Bosch's painting technique was meticulous. He used thin, translucent glazes to build up luminous colors, and infrared scans reveal careful underdrawings beneath the paint. These nightmares were carefully planned, not random doodles. At the same time, the same scans show Bosch revising as he worked — shifting and reworking figures on the panel — so the final composition emerged partly through the act of painting itself.

All this planning complicates a popular myth. The Surrealists later cast Bosch as a kindred spirit who painted straight from the unconscious. But the evidence points the other way: he was a deeply religious painter working inside a medieval moral framework his contemporaries understood clearly. The nightmares were deliberate sermons, not dreams.