But in the transition from romantic to actual I have learned many things I should never have known had I not tried the experiment. One of them is the precious science of patience, which teaches us that we should take our education as we would take a walk in the country,leisurely, our minds hospitably open to impressions of every sort. Such knowledge floods the soul unseen with a soundless tidal wave of deepening thought. “Knowledge is power.” Rather, knowledge is happiness, because to have knowledge — broad, deep knowledge — is to know true ends from false, and lofty things from low. To know the thoughts and deeds that have marked man’s progress is to feel the great heart-throbs of humanity through the centuries; and if one does not feel in these pulsations a heavenward striving, one must indeed be deaf to the harmonies of life.
(From — The story of my life by Helen Adams Keller.)