Famous quotes containing the words single and/or species:
“The unhappy are prisoners of a single round of thought.”
—Mason Cooley (b. 1927)
“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)