Henry David Thoreau, Walden: Or, Life in the Woods

"We need the tonic of wildness...At the same time that we are earnest to explore and learn all things, we require that all things be mysterious and unexplorable, that land and sea be indefinitely wild, unsurveyed and unfathomed by us because unfathomable. We can never have enough of nature."

Henry David Thoreau, Walden: Or, Life in the Woods

"I should not talk so much about myself if there were anybody else whom I knew as well."

Henry David Thoreau, Walden: Or, Life in the Woods