 What was needed, he asserted, was a mystical and spiritual "philosophy of love"—his radical theology claimed that it was God, not man who was in need of Redemption and he defined the alchemical opus as a labor which redeemed not man but God, a proposal which came perilously close to being heretical in the eyes of Christian orthodoxy.His principal writings are included in Volume I of the "Theatrum Chemicum".As Monika Wikman summarized in her book "Pregnant Darkness", "Alchemists such as Gerhard Dorn, in his work 'The Speculative Philosophy,' referred to this next alchemical stage [inner healing] as "Unus Mundus", where splits are healed, duality ceases, and the individual, the "vir unus", unites with the world soul."