Or, to quote Emily Dickinson's "Nature is What We See":
From the NY Times Magazine article by Paul Bloom:
"Many studies show that even a limited dose of nature, like a chance to look at the outside world through a window, is good for your health. Hospitalized patients heal more quickly; prisoners get sick less often. Being in the wild reduces stress; spending time with a pet enhances the lives of everyone from autistic children to Alzheimer’s patients..."
Nature is what we know
But have no art to say,
So impotent our wisdom is
To Her simplicity.