Coleridge was much addicted to the habit of marginal writing; which, though sadly wasteful on his own part, was very enriching to those friends who loaned him from their libraries.[80] Charles Lamb, who was not inclined to spare book-borrowers as a tribe, had no reflections to cast upon Coleridge for this habit. The depth, weight, and originality of his comments as hastily and carelessly penned on the margins of books were wonderful, and if collected and classified would form several volumes, not only of captivating interest, but of rare critical value, as the few which have been brought together abundantly prove. In one volume which he returned to Lamb is this memorandum: "I shall die soon, my dear Charles Lamb, and then you will not be vexed that I have be-scribbled your book. S. T. C., May 2d, 1811." "Elia" valued these marginal notes beyond price, and said that to lose a volume to Coleridge carried some sense and meaning with it. These critical notes often nearly equalled in quantity of matter the original text. In his article upon the subject, Lamb says, "I counsel thee, shut not thy heart nor thy library against S. T. C." As we have already said, while this erratic expenditure of Coleridge's rare literary taste and judgment enriched others, it in a degree impoverished himself; for had the same time and thought been expended upon consecutive literary work, it would have produced volumes of inestimable value to the world at large, and have proved monumental to their author. Byron was addicted to marginalizing; and though he could not equal Coleridge in the profundity of his criticisms, or impart such charming interest to them, still he was quite original and often piquant. Burns contented himself with trifling criticisms of approval or disapproval pencilled in the margin of books, especially poetical ones, which were nearly all he was in the habit of reading.