Opera Posthuma

Baruch Spinoza's Opera Posthuma comprise his works that were published posthumously in 1677, the year of Spinoza's death, by some of his closest friends. Four of these are well known: the Ethica, the Tractatus Politicus, the Tractatus de Intellectus Emendatione, and the Epistolae (letters by Spinoza to correspondents, expounding aspects of his philosophy). The fifth and final work of the Opera Posthuma is a grammar of the Hebrew language, Compendium Grammatices Linguae Hebraeae.

Spinoza's Short Treatise on God, Man, and His Well-Being - expressing opinions sharply conflicting with the dominant Calvinist theology of his time as with the Judaism practiced by the Amsterdam Jewish community - was not included in the Opera Posthuma. It was only published much later, on the basis of two Dutch translations of it, which were discovered about 1810."[1]