Man is distinguished, not only by his reason; but also by this singular passion from other animals... which is a lust of the mind, that by a perseverance of delight in the continual and indefatigable generation of knowledge, exceeds the short vehemence of any carnal pleasure.
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 heartthrobs 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.
Vague and mysterious forms of speech, and abuse of language, have so long passed for mysteries of science; and hard or misapplied words with little or no meaning have, by prescription, such a right to be mistaken for deep learning and height of speculation, that it will not be easy to persuade either those who speak or those who hear them, that they are but the covers of ignorance and hindrance of true knowledge.