Famous quotes containing the words tree and/or species:
“Each has his own tree of ancestors, but at the top of all sits Probably Arboreal.”
—Robert Louis Stevenson (1850–1894)
“Both classically- and romantically-minded spirits—inasmuch as these two species always exist—occupy themselves with a vision of the future: but the former do so out of a strength of their age, the latter out of its weakness.”
—Friedrich Nietzsche (1844–1900)