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In page Actual idealism:

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Benedetto Croce objected that Gentile's "pure act" is nothing other than Schopenhauer's will.[1] However Schopenhauer "…came to rest in an Absolute which transcends concrete experience … and for (Schopenhauer) the Critical Philosophy was only a prolegomena or propaedeutic to a speculative or 'transcendent' philosophy of the kind which Gentile and Kant are united in opposing",[2] according to H. S. Harris's book on the basic metaphysics of Giovanni Gentile in contrast to that of Schopenhauer.