Famous quotes containing the words yeast and/or species:
“Do you not know that a little yeast leavens the whole batch of dough?”
—Bible: New Testament, 1 Corinthians 5:6.
“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)