Adam Gottlieb Weigen (1677–1727) was a German pietist, theologian and early animal rights writer.
Weigan was the son of a surgeon and was born at Waiblingen in 1677.[1] He studied theology at Württemberg but also took interest in anatomy and natural science.[1] Weigen became a pastor and advocate of pietism in Leonberg. He took up this post in 1705.[1] Weigan was influenced by the writings of Philipp Spener.[1]
Weigen argued for a compassionate treatment of the animals from a Christian theological framework.[2][3] In 1711, Weigen authored De Jure Hominis in Creaturas. It has been described as "the first work ever to deal with the topic of animal rights as a general theme."[4] The book became known in Denmark and inspired Laurids Smith. It was republished in 2008.[4]
Weigen moved to Wahlheim, where he died in 1727.[1]