Famous quotes containing the words alien and/or species:
“I am human and let nothing human be alien to me.”
—Terence (c. 190–159 B.C.)
“The question that will decide our destiny is not whether we shall expand into space. It is: shall we be one species or a million? A million species will not exhaust the ecological niches that are awaiting the arrival of intelligence.”
—Freeman Dyson (b. 1923)