Education
Klein studied law at Halle under Daniel Nettelbladt, a follower of Christian Wolff, before practising law in Breslau.
Klein studied law at Halle under Daniel Nettelbladt, a follower of Christian Wolff, before practising law in Breslau.
In 1781 he moved to Berlin, where he served in the Prussian justice department as an adviser to Frederick"s High Chancellor Johann H. C. von Carmer and worked with Carl Gottlieb Svarez to co-author the reforming Prussian Civil Code, the Allgemeines Landrecht. In 1791 he returned to Halle, and in 1800 was once again in Berlin as an Upper Court Councillor.
Prussian Academy of Sciences]
He was active in the Mittwochsgesellschaft (Wednesday Society): his Freiheit und Eigenthum (1790) was presented as a set of dialogues between members of the society.