In this chapter, Robb Dunphy is concerned with the nature of G.E. Schulze's scepticism as he presents it in his 1792 work Aenesidemus, and with its relation to the metaphysical projects of Kant, Reinhold, and later German Idealists. After introducing Schulze's text, Dunphy turns to a recent interpretation offered by Jessica Berry, who claims that the extent to which Schulze endorsed a genuinely Pyrrhonian Scepticism has gone unacknowledged, both by his idealist contemporaries and by the majority of the secondary literature on the period. Berry suggests that this unacknowledged Pyrrhonism in Aenesidemus provides the resources for a more radical criticism of the German Idealists' scientific, systematic metaphysical ambitions, to which they remain fundamentally vulnerable. Despite agreeing that an exploration of Schulze's debt to Pyrrhonism represents a valuable addition to our understanding of his scepticism, in the latter parts of the chapter Dunphy suggests that the Berry's attribution of a Pyrrhonian Scepticism to Schulze should to some extent be rejected, and that such a scepticism is perhaps not quite as problematic for the projects of Kant and the German Idealists as she suggests.