Enchantment and Belief

"The World I Live In" by Mary Oliver

I have refused to live
locked in the orderly house of
    reasons and proofs;
The world I live in and believe in
is wider than that. And anyway,
    what’s wrong with Maybe?

You wouldn’t believe what once or
twice I have seen. I’ll just
    tell you this:
only if there are angels in your head will you
    ever, possibly, see one.