Johann Conrad Dippel

Johann Conrad Dippel (August 10, 1673 – April 25, 1734) was a German pietist theologian, alchemist and physician.

Dippel was born at Castle Frankenstein near Mühltal and Darmstadt, and therefore once at his school the addendum Franckensteinensis and once at his university the addendum Franckensteina-Strataemontanus was used.

He studied theology, philosophy and alchemy at the University of Giessen, obtaining a master's degree in theology in 1693. He published many theological works under the name Christianus Demócritus, and most of them are still preserved. Circa 1700 he turned to Hermetic studies and alchemy as a key to nature. Between 1700 and 1702 he engaged in a bitter dispute with the Reformed Court Preacher Conrad Broeske in Offenbach, with whom he shared millenarian hopes for soon-coming renewal in Christendom. He accused Broeske of compromise and collusion with the authorities after Broeske refused to publish Dippel's "The Scourging Papacy of the Protestants" on the Offenbach press.

Dippel's reputation as a controversial theologian earned him both defenders and enemies throughout all of Europe. Emanuel Swedenborg was probably both his most notable supporter and, later, staunch critic: Swedenborg began as a disciple of Dippel, but eventually dismissed him as a "most vile devil ... who attempted wicked things." Swedenborg clarified that he was at first enamored by Dippel's emotionally charged writings and agreed with his attempts to dissolve traditional churches for a more personal faith and rejection of the Bible as the literal Word of God; however, he eventually criticized Dippel as "bound to no principles, but was in general opposed to all, whoever they may be, of whatever principle or faith ... becoming angry with any one for contradicting him." Swedenborg went so far as to suggest that Dippel was merely a cultish opportunist who used his theological charisma for his own financial gain and social influence, actively leading people away from traditional faith in order to "take away all their intelligence of truth and good, and leaving them in a kind of delirium."

Dippel led an adventurous life, often getting into trouble because of his disputed opinions and his problems with managing money. He was eventually imprisoned for heresy, where he served a seven-year sentence. He created an animal oil known as Dippel's Oil which was supposed to be the equivalent to the alchemists' dream of the "elixir of life." At one point, Dippel attempted to purchase Castle Frankenstein in exchange for his elixir formula, which he claimed he had recently discovered; the offer was turned down.

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