 Thus ideas originate in the mind in two distinct ways: in one case, they are triggered by sensations, and in the other they arise without any corresponding bodily stimulus. However, La Forge also repeated Descartes’ theory of the origin of ideas, according to which all ideas are innate (in some sense) in the mind. He identified the ‘principal and effective’ cause of ideas as the mind, while bodily sensations were described as the ‘remote and occasional’ causes of some ideas. The argument here seemed to depend on the dissimilarity between the body and the mind: