The two main ones involve the existence of an unconscious, unconscious motivation, and the notion of unconscious dynamics or unconscious conflict which lead to mental illnesses, dreams, slips of the tongue and so on.

两个主要的涉及无意识、无意识动机的存在，以及导致精神疾病、梦想、口误等的无意识动力或无意识冲突的概念。