This is what I wrote last year about what inspired the design and the poem.
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“I am drawn to the arboretum’s small, enveloping clearings in the trees and feel nurtured by them. Many of the individual trees, themselves, seem delicate and vulnerable. These feelings recall my recent entry into motherhood, my work for global sustainability and my increasing awareness of global warming and I see parallels in my instinct to nurture at various scales. I appreciate the trees - how each fragile one, in its ‘breathing,’ continually works to maintain our atmosphere. I see the mutual nurturing as a circle - where we are both a ‘child of’ as well as a ‘parent of’ the earth.”
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I'd also been singing a lot of lullaby songs, which I think affected the rhythm of it. I sometimes sang this poem to my boys to try it out to the tune of "Twinkle, Twinkle Little Star," or "All the Pretty Little Horses."