*The content for the entry "'Dictum de omni "'has been moved over to that of Dictum de omni et nullo .-- Talk 13 : 05, 31 January 2008 ( UTC)
2.
Many other propositions have also been mentioned as laws of thought, including the dictum de omni et nullo attributed to Aristotle, the substitutivity of identicals ( or equals ) attributed to Euclid, the so-called identity of indiscernibles attributed to Gottfried Wilhelm Leibniz, and other " logical truths ".
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