Benjamin Warberg

“All this is, of course, the old philosophic distinction between reason and passion; but Spinoza adds vitally to Socrates and the Stoics. He knows that as passion without reason is blind, reason without passion is dead. “An emotion can neither be hindered nor removed except by a contrary and stronger emotion.”95 Instead of uselessly opposing reason to passion—a contest in which the more deeply rooted and ancestral element usually wins—he opposes reasonless passions to passions coördinated by reason, put into place by the total perspective of the situation. Thought should not lack the heat of desire, nor desire the light of thought. “A passion ceases to be a passion as soon as we form a clear and distinct idea of it, and the mind is subject to passions in proportion to the number of adequate ideas which it has.”96 All appetites are passions only so far as they arise from inadequate ideas; they are virtues . . . when generated by adequate ideas”;97 all intelligent behavior—i.e., all reaction which meets the total situation—is virtuous action; and in the end there is no virtue but intelligence.”
― Will Durant, The Story of Philosophy