Knowledge is never used up. It increases by diffusion and grows by dispersion. The more extensive a man's knowlege of what has been done, the greater will be his power of knowing what to do. The restriction of knowlege to an elite group destroys the spirit of the society and leads to its intellectual impoverishment. Faith is an oasis in the heart which will never be reached by the caravan of thinking.
Perplexity is the beginning of knowledge.
If you understand everything, you must be misinformed. We know a subject ourselves, or we know where we can find information on it. We're drowning in information and starving for knowledge. All these people talk so eloquently about getting back to good old-fashioned values. Knowledge is the only fountain both of love and the principles of human liberty.