Famous quotes containing the words single and/or species:
“Many single parents say that they feel they have to be both a mother and a father to the child. This is impossible, so you may as well rule out that idea.... As a single parent, you cannot be both a man and a woman. Who you are is a parent.”
—Lawrence Balter (20th century)
“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)