I deny not, but that it is of greatest concernment in the Church and Commonwealth, to have a vigilant eye how Bookes demeane themselves as well as men; and thereafter to confine, imprison, and do sharpest justice on them as malefactors: For Books are not absolutely dead things, but doe contain a potencie of life in them to be as active as that soule was whose progeny they are; nay they do preserve as in a violl the purest efficacie and extraction of that living intellect that bred them. I know they are as lively, and as vigorously productive, as those fabulous Dragons teeth; and being sown up and down, may chance to spring up armed men. And yet on the other hand, unlesse warinesse be us’d, as good almost kill a Man as kill a good Book; who kills a Man kills a reasonable creature, Gods Image; but hee who destroyes a good Booke, kills reason it selfe, kills the Image of God, as it were in the eye. Many a man lives a burden to the Earth; but a good Booke is the pretious life-blood of a master spirit, imbalm’d and treasur’d up on purpose to a life beyond life. ‘Tis true, no age can restore a life, whereof perhaps there is no great losse; and revolutions of ages do not oft recover the losse of a rejected truth, for the want of which whole Nations fare the worse.
John Milton, Areopagitica