Words are acoustical signs for concepts; concepts, however, are more or less definite image signs for often recurring and associated sensations, for groups of sensations. To understand one another, it is not enough that one use the same words; one also has to use the same words for the same species of inner experiences; in the end one has to have one's experiences in common.
And tell him it's quite true that the best of the philosophers are of no use to their fellows; but that he should blame, not the philosophers, but those who fail to make use of them.
Men subsequently put whatever is newly learned or experienced to use as a plowshare, perhaps even as a weapon: but women immediately include it among their ornaments.
All the facts of nature are nouns of the intellect, and make the grammar of the eternal language. Every word has a double, trebleor centuple use and meaning.
To spend too much time in studies is sloth; to use them too much for ornament is affection; to make judgment wholly by their rules is the humor of a scholar.
Intelligence is so damn rare and the people who have it often have such a bad time with it that they get bitter or propagandistic and then it's not much use.