For books are not absolutely dead things, but ...do preserve as in a vial the purest efficacy and extraction of that living intellect that bred them.… - John Milton

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For books are not absolutely dead things, but ...do preserve as in a vial the purest efficacy and extraction of that living intellect that bred them. I know they are as lively, and as vigorously productive, as those fabulous Dragon's teeth; and being sown up and down, may chance to spring up armed men....Yet on the other hand unless wariness be used, as good almost kill a Man as kill a good Book; who kills a Man kills a reasonable creature, God's Image; but he who destroys a good Book, kills reason itself, kills the Image of God, as it were in the eye. Many a man lives a burden to the Earth; but a good Book is the precious life-blood of a master-spirit, embalmed and treasured up on purpose to a life beyond life.