[78] This article has been lately reprinted in a volume of "Critiques and Addresses," and Leibniz's censure of Newton will be found on p. 323. It may be convenient for some readers to be informed that the Correspondence between Clarke and Leibniz to which I have referred will be found at the end of Erdmann's Opera Leibnitii (Berlin, 1840), a portable and useful Edition. The sentences quoted by me are on page 747. [79] J. Müller. [80] Kant. [81] Philosophy of Discovery, Chap. XXX. 23, pp. 369-70. [82] It is necessary to observe the Professor's limitations. [83] They have been noted before. In this place it is necessary to examine the following instances. [84] Critiques, p. 306. [85] Lay Sermons, p. 373. [86] Critiques, p. 281. [87] Ibid. 349. CHAPTER III. CONDITIONS OF HUMAN KNOWLEDGE. "The words which the great German poet put into the mouth of Mephistopheles when describing himself to Faust, afford perhaps the most concise and forcible statement of what we may call the anti-scientific spirit:-- 'Ich bin der Geist der stets verneint, Dem alles, was entsteht, zuwider ist.' The true spirit of science is certainly affirmative, not negative; for, as I mentioned just now, its history teaches us that the development of our knowledge usually takes place through two or more simultaneous ideas of the same phenomenon, quite different from one another, both of which ultimately prove to be parts of some more general truth; so that a confident belief in one of those ideas does not involve or justify a denial of the others."--_Address of the President of the British Association_, 1873-4. p. 13. "Philosophy is but wise and disciplined thought upon the subjects on which all men think. The minds of men, left to their own natural working, will never cease to think on these things; and if Philosophy should cease to attempt to think wisely on them, she abandons her position as a guide. She has been to blame for the carelessness of her procedure, for the overweeningness of her pretensions. But the remedy is soberness, not scepticism. Is it, after all, an evil, that in some directions we fail to attain certainty by mere thinking?... As in nature, the picture you see is not broad light and dark, but a thousand tender tones and hues melting into each other, and vibrating together between the light and dark: so is the mind of man." Archbishop of York--on _The limits of Philosophical Inquiry_, pp. 25-26. "To the _knowledge_ of the most contemptible _effect_ in nature, 'tis necessary to know the whole _Syntax_ of Causes, and their particular _circumstances_, and _modes_ of action. Nay, we _know nothing_, till we _know ourselves_, which are the summary of all the world without us, and the _Index_ of the Creation." Glanvill, _Vanity of Dogmatizing_, Chap. xxii. Ed. 1. p. 217.