Complex sentence: In 1934, Jung authored the Marburg speech delivered on June 17 by von Papen at the University of Marburg which articulated the conservative establishment's criticism of the violence of National Socialism.
Split into simpler sentences: In 1934, Jung wrote the Marburg speech that was delivered on June 17 by von Papen at the University of Marburg. The speech articulated the conservative establishment's criticism of the violence of National Socialism.