Three laws {laws of thought} underlie thinking: identity, contradiction, and excluded middle. It is impossible to prove laws of thought true.
Something identical to true thing is true {law of identity}, or what is, is.
Nothing is both true and false {law of non-contradiction} {law of contradiction}, or nothing both is and is not.
Something is either true or false {law of the excluded middle}.
6-Philosophy-Epistemology-Methods
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Date Modified: 2022.0225