So didst thou travel on life's common way, In cheerful godliness; and yet thy heart The lowliest duties on herself did lay. (12-14)
First of all, Milton was a humble guy. He didn't get all up on himself about being an amazing poet or a better-than-average human – no, instead, he chose to live like the rest of us (only better). Furthermore, he took the most humble duties upon himself, and didn't ask for any special treatment.