It is not much to any purpose to abuse the authors of mere rubbish.

The real lesson to be learned from such of them as may possibly have been sincere, as well as from the failure of his contemporaries to appreciate his genius--the sneers of Moore, the stupidity of Campbell, the ignorance of Wordsworth, the priggishness of Southey, or the condescending tone of Keats--is that nothing is more difficult than for lesser men or equals to pay just homage to the greatest in their lifetime.

Those who may be interested in studying Shelley's attitude toward his critics, should read a letter addressed to Ollier from Florence, October 15, 1819, soon after he had seen the vile attack upon him in the "Quarterly", comparing this with the fragments of an expostulatory letter to the Editor, and the preface to "Adonais".
(Shelley Memorials, page 121.

Garnett's Relics of Shelley, pages 49, 190.

Collected Letters, page 147, in Moxon's Edition of Works in one volume 1840.) It is clear that, though he bore scurrilous abuse with patience, he was prepared if needful to give blow for blow.