After he had applied in earlier works the concept of rights from Immanuel Kant (as in: "Legal concept and idea of law" from the year 1915), he later became a strong critic of Neokantian legal philosophy, especially the philosophy of law of Rudolf Stammler.
在他早些时候的作品中引用了康德的权利概念后（如1915年的“法律概念（Legal concept）和法律理念（idea of law）”），后来他强烈的批评新康德主义法律哲学，特别是鲁道夫·施塔姆勒的法哲学。