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Kron, Gabriel. . "When only positive and negative real numbers exist, it is customary to replace a positive resistance by an inductance and a negative resistance by a capacitor (since none or only a few negative resistances exist on practical network analyzers.)" Gabriel Kron, "Numerical solution of ordinary and partial differential equations by means of equivalent circuits." Journal of Applied Physics, Vol. 16, Mar. 1945a, p. 173.
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Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma — which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.
Steve Jobs. Apple CEO