French Philosophy - 17th Century - Nicolas Malebranche

Nicolas Malebranche

One solution to the mind-body problem came from Cartesian Nicolas Malebranche (1638–1715). Malebranche maintained that created substances of a different kind cannot interact with one another. In fact, he believed substances of the same kind could not interact either because no necessary causation could be perceived. He proposes then that it is God, an uncreated substance, who brings it about that each time one perceives a 'cause', one also perceives an 'effect'. Hence the doctrine is named occasionalism.

Malebranche was well-known and celebrated in his own time, but has since become somewhat of an obscure figure in the history of western philosophy. His philosophy had a profound effect on it, however, through its influence upon Spinoza and Hume, whose problem of causation was influenced by Malebranche’s occasionalism. It’s possible that Malebranche also influenced George Berkeley, although he rejects any association with Malebranche beyond superficial similarities.