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| | Leibniz, Gottfried Wilhelm, Baron von. The Columbia Encyclopedia, Sixth Edition. 2001-05 (Site not responding. Last check: 2007-11-06) |
 | | Leibnizs calculus was published in 1684, three years before Newtons, and his system of notation was universally adopted. |
 | | Leibnizs assertion, however, does not imply an unqualified optimism, since evil is a necessary ingredient in even the best of all possible worlds. |
 | | A basic distinction in Leibnizs logic is that made between truths of reason, or necessary propositions, whose principle is the law of noncontradiction, and truths of fact, or contingent propositions, based on the principle of sufficient reason. |
| www.bartleby.com /65/le/Leibniz.html (696 words) |
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