"A literary critic is someone who can't write, but who loves to show he would have been a wonderful writer if only he could!"

This quote by Brian Lumley is a humorous take on literary critics. It implies that literary critics are people who are unable to write, but they still have a passion for composing and a desire to show off their potential. The quote recommends that literary critics are individuals who are envious of authors and desire they could write as well as them. It likewise suggests that literary critics are individuals who are extremely crucial of other writers' work, as they are not able to produce their own. The quote is a humorous way of highlighting the irony of literary critics, who are unable to write but still have a strong opinion on the quality of other writers' work. It is a tip that everybody has their own opinion which it is essential to respect the viewpoints of others, even if they are not able to produce their own work.