[15] Page 104, Note 15.--Karl Leonard Reinhold (born in Vienna October 26, 1758) was educated as a Jesuit and became professor of philosophy in the Jesuit college of the Barnabites, but renounced the faith of his youth in 1783 and left Vienna for Weimar, where he married the daughter of the poet Wieland. He became professor of philosophy at the University of Jena in 1787 and 1794 in Kiel, where he died April 10, 1823. He was a Kantian and wrote much on Kantian philosophy. [16] Page 112, Note 16.--Very good as a general criticism. Goethe, however, was on the wrong track, in directing this distich against Newton’s theory of color. [17] Page 116, Note 17.--Kant called his philosophy transcendental idealism, and his followers insisted upon the importance of transcendentalism. They were opposed by naturalists, who scorned theory and insisted on the facts of experience. For the meaning of the word “transcendental” see the translator’s _Fundamental Problems_, p. 30 _et passim_, and _Primer of Philosophy_, p. 66. “Transcendent” means what transcends human knowledge, i. e., what is unknowable, but “transcendental” is in Kantian terminology non-sensory or formal knowledge such as pure logic and arithmetic, involving the principles of theory or systematic abstract thought. [18] Page 120, Note 18.--Here the term “natural law” does not mean laws of nature but the juridical principle based upon primitive natural conditions. [19] Page 121, Note 19.--Samuel von Puffendorf (1632-1694) was a famous jurist and professor of natural law in Berlin. (See previous note.) [20] Pages 122 and 123, Note 20.--Kant declared that the man who performed his duty because it gave him pleasure was less moral than he who did it against his own inclinations.