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.
“Genius detects through the fly, through the caterpillar, through the grub, through the egg, the constant individual; through countless individuals the fixed species; through many species the genus; through all genera the steadfast type; through all the kingdoms of organized life the eternal unity. Nature is a mutable cloud which is always and never the same.”
—Ralph Waldo Emerson (1803–1882)