In April 1745, in a modest London tavern, a respected 57-year-old Swedish scientist experienced a vision that ruptured the course of his life with a strangely mundane warning: do not eat too much. This episode traces the chronological and deeply unconventional journey of Emanuel Swedenborg, from empirical genius to a mystic who mapped the architecture of heaven.

Swedenborg sketched flying machines, anticipated the neuron, and proposed a nebular hypothesis before turning to decode the spiritual meaning of scripture. His scientific rigor was not abandoned but redirected, unified by his theory of correspondences that treated the physical world as a symbolic mirror of the divine.

• Raised by a pietist bishop father, he served on the Swedish Board of Mines and wrote voluminously, partly because a severe stutter made lecturing hard
• After his 1745 vision he learned Hebrew from scratch and wrote the eight-volume Arcana Coelestia
• He rejected a three-person Trinity and salvation by faith alone, arguing faith without charity is dead
• In 1759 he described the Gothenburg fire in real time from 400 kilometers away, an account later confirmed by couriers
• He predicted his own death on March 29, 1772, and died precisely on that date, swearing his writings were true