One of the surest tests of the superiority or inferiority of a poet is the way in which a poet borrows. Immature poets imitate mature poets steal bad poets deface what they take and good poets make it into something better or at least something different. The good poet welds his theft into a whole of feeling which is unique utterly different than that from which it is torn the bad poet throws it into something which has no cohesion. A good poet will usually borrow from authors remote in time or alien in language or diverse in interest.
T. S. EliotAnd the lost heart stiffens and rejoices in the lost lilac and the lost sea voices and the weak spirit quickens to rebel for the bent golden-rod and the lost sea smell quickens to recover.
T. S. EliotWe fight for lost causes because we know that our defeat and dismay may be the preface to our successors' victory, though that victory itself will be temporary; we fight rather to keep something alive than in the expectation that anything will triumph.
T. S. Eliot