This thinker defended his most famous book in a series of letters to Ehrenfried Walther von Tschirnhaus. Moses Mendelssohn was drawn into a controversy over him after his friend Lessing was accused of following this philosopher by Friedrich Jacobi ("YAÂ­kohÂ­bee"). This philosopher related active and passive states of mind to confused "inadequate" ideas and clear "adequate" ones. He proposed that the emotions derive from the fact that "each thing strives to persevere in its being," as part of his theory of (*) conatus. 
This thinker defended his most famous book in a series of letters to Ehrenfried Walther von Tschirnhaus. Moses Mendelssohn was drawn into a controversy over him after his friend Lessing was accused of following this philosopher by Friedrich Jacobi ("YAÂ­kohÂ­bee"). This philosopher related active and passive states of mind to confused "inadequate" ideas and clear "adequate" ones. He proposed that the emotions derive from the fact that "each thing strives to persevere in its being," as part of his theory of (*) conatus. This philosopher claimed that mind and body are two separate substances that are nonetheless inseparable in a book that describes the "powers of the affects" in the section "Of Human Bondage." He concluded that "God is Nature" in a "geometricallyÂ­ordered" book. For 10 points, name this opponent of Descartes whose pantheistic Ethics got him kicked out of Dutch Jewry.
This thinker defended his most famous book in a series of letters to Ehrenfried Walther von Tschirnhaus.
Baruch  Spinoza  [or Benedict  Spinoza