Gottfried Leibniz

I hold that the mark of a genuine idea is that its possibility can be proved, either a priori by conceiving its cause or reason, or a posteriori when experience teaches us that it is in fact in nature.
I hold that the mark of a genuine idea is that its possibility can be proved, either a priori by conceiving its cause or reason, or a posteriori when experience teaches us that it is in fact in nature.
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These are some quotes by German author Gottfried Leibniz Philosopher, who lived between July 1, 1646 and November 14, 1716.