Famous quotes containing the words tree and/or species:
“On a tree by a river a little tom-tit Sang “Willow, titwillow, titwillow!”
And I said to him, “Dicky-bird, why do you sit Singing, “Willow, titwillow, titwillow!””
—Sir William Schwenck Gilbert (1836–1911)
“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)