No poem, not even Shakespeare or Milton or Chaucer, is ever strong enough to totally exclude every crucial precursor text or poem.
Harold BloomThe true use of Shakespeare or of Cervantes, of Homer or of Dante, of Chaucer or of Rabelais, is to augment one's own growing inner self. . . . The mind's dialogue with itself is not primarily a social reality. All that the Western Canon can bring one is the proper use of one's own solitude, that solitude whose final form is one's confrontation with one's own mortality.
Harold Bloom