Elusive Poem

Several times over the past few months the following poem (or part of a poem) by Elizabeth Barrett Browning has crossed my path. I have written and spoken about seeing joy in the mundane in several classes recently--but I have never been able to trace where this bit comes from. I do appreciate the sentiment of the lines. If anyone knows from whence they come, please answer.

Glory in the Commonplace
Enough of Science and of Art;
Earth's crammed with heaven,
And every common bush afire with God,
But only he who sees
takes off his shoes;
the rest sit round it and pluck blackberries.