Answer:
Explanation:
It's hard to answer this question, because the first lines are missing. What Shakespeare is trying to do is counter the depressing thoughts he is having. He almost despises himself.
To stop that he thinks of "thee" the unknown person that is an ideal. He compares his thoughts about "thee" to a lark at break of day arising ... singing hymns at heaven's gate;
His attitude changes so much that he would "scorn to change my state with kings."