I think that I cannot preserve my health and spirits, unless I spend four hours a day at least — and it is commonly more than that — sauntering through the woods and over the hills and fields, absolutely free from all worldly engagements. – Henry David Thoreau

Solitude never hurt anyone. Emily Dickinson lived alone, and she wrote some of the most beautiful poetry the world has ever known… then went crazy as a loon. – Matt Groening, The Simpsons, spoken by the character Lisa Simpson

But on the first day came veiled spirits from all hours into his soul… a soft intoxication, which the atmosphere of nature, like that of a wine-store, communicated to him, spread itself, like an enchanted solitude around his soul. – Jean Paul Friedrich Richter, Hesperus, or Forty-Five Dog-Post-Days: A Biography,