The first ever English translation of Franois Hemsterhuis' philosophically ambitious and illuminating fragments, notes and correspondence, making accessible to Anglophone readers some of the most significant texts, for a genuine understanding of his philosophy. This final volume in The Edinburgh Edition of the Complete Philosophical Works of Franois Hemsterhuis includes the Letter on Atheism, the Letter on Fatalism and the Letter on Optics-all penned as part of his remarkable correspondence with Amalie Gallitzin-as well as the unpublished dialogue, Alexis II. Also included is Hemsterhuis' philosophical responses to Plato, Spinoza and Diderot, to contemporary political events in the Dutch Republic and to the French Revolution.