Spinoza is a materialistic monist with an inconsistent touch of mysticism and a certain concession, more apparent than real, to the spiritual side of experience.
Extremes meet; and those who believe only in body and those who believe only in mind, have an equal right to the equivocal term " monist."
It follows that philosophy is in a sense both dualist and monist; it is a cosmic dualism inasmuch as it admits the possible existence of matter as a hypothesis, though it denies the possibility of any true knowledge of it, and is hence in regard of the only possible knowledge an idealistic monism.
Some ' monist ' views, often called materialism, think that there is only matter, and no spirit or divine.