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.
Helen Keller