Well sounds strange but my biggest inspiration is not a human, or an idea, it's nature, animals and music. When I spend some time close to nature, or with animals, or listening to some beautiful music, especially someone singing, I feel .... can't explain how I feel, but I know that's the state I (and the entire humanity) want to reach permanently. They teach me lessons I can't explain with words, but that are the highest inspiration I could ever get.
Angela is a great inspiration too, though, indeed
edit: close your eyes and listen to that song and tell me if you're not inspired!
Yi Re Yio