Mulla Sadra held that necessary causality has harmony with free will but, free will put forward by him is the same as determinate. In fact, mulla sadra interpreted willer as purpose and believed that human being has will but his will is caused by yearning is caused by knowledge and knowledge is caused by external factors are caused by god this kind of causality is necessary therefore, will of human being is necessary when existence of causality is, and he can not but make willing. In other words, free will means ability of human to will and to not will and in effect, ability to do and not do is impossible and unacceptable on has is of necessary causality, therefore, free will in mentioned sense does not gather with necessary causality though, will gather with it.
But spinoza expressed freewill not gather with necessary causality and because necessary causality is obvious human being has not freewill. Spinoza also negated free will in meaning of ability to will and not will from human and also freewill in own special meaning namely, doing of act as nature of agent requires Spinoza also like mulla sadra regarded human wilier, but he did not interpreted wilier as purpose as mulla sadra did and in effect expressed human has not free will the kind of causality was accepted by spinoza is different with mulla sadra’s. philosophical view and similar to view of mystics accepted sometime by Mulla Sadra.
Spinoza interpreted relation God with creations with internal causality on basis of this causality, cause and effect are not two accidents or substances in along or in beside together, but effects of modes of cause or substance of God. This view as attitude of manifestation of mystics impaling one being and it’s manifestation involve one substance and its modes.