Is there a way to delete or edit comments on blog posts?

I feel I may have been too hard on Larry Leo.

I called him out for first writing a misleading article, and then a second time for just copying and pasting the title of and a paragraph from another article.

I decided I really dont care if Larry doesnt really try to be original or do a good job of writing blog posts, so I want to just delete my comments. But I can't, or at least I am too dumb to figure out how. Help.