He outlined a theory of the causes of religion and superstition and debated on the grounds of the acts of religious belief, and also conducted inquiry into the use of various terms in psychopathology.

• 他以心理分析角度勾勒出宗教与迷信的原因，并讨论宗教信仰的行为基础，也对精神病理分析术语的使用进行深入研究；