Don't think pleasant thoughts

I had the privileged of reading A William Wordsworth poem for my literature course. The work they selected was called Lines written in Early Spring. Now to me that sounds like a happy joy joy kind crap that we are use to. It begins by talking about how he sat in a grove and heard thousands of blended notes. Then it gets real strange. He then states that this brings pleasant thoughts to mind, and that the pleasant thoughts bring sad thoughts. That kind of defeats the purpose of pleasant thoughts. Now I will be paranoid every time I think of puppies, rainbows, and turkeyhill ice cream. Me and these poets have something in common neither of us proof read our writing to see if it actually makes sense. So I justify myself by thinking that these guys got published and they didn't make sense, and I am not published so I must be pretty good (for a non published guy). Then to top things off Lord Bryon begins his poem Darkness by stating "I had a dream, which was not at all a dream". So what I understand is that he said all that just to inform us he didn't have a dream. Either that or contradicting ones self is common in poetry. I am sure there is some explanation for Lord Bryon's intro, but to sit and think about it is a waste of my time. So is writing this blog.