Baruch Spinoza Quotes about Understanding

"Champions of a Free Society: Ideas of Capitalism's Philosophers and Economists" by Edward Wayne Younkins, Lexington Books, (p. 83), 2008.
The highest endeavor of the mind, and the highest virtue, it to understand things by intuition.
Baruch Spinoza (2014). “The Road to Inner Freedom: The Ethics”, p.77, Open Road Media
"Ethica Ordine Geometrico Demonstrata" by Baruch Spinoza, Part III, (Preface), 1677.