"Instruments and playthings are sense and spirit: behind them there is still the Self. The Self seeketh with the eyes of the senses, it hearkeneth also with the ears of the spirit."

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The importance of language in gaining knowledge is doubtless the chief cause of the common notion that knowledge may be passed directly from one to another. It almost seems as if all we have to do to convey an idea into the mind of another is to convey a sound into his ear. Thus imparting knowledge gets assimilated to a purely physical process.

— John Dewey