Experience is the only teacher, and we get his lesson indifferently in any school.
Ralph Waldo EmersonOur globe discovers its bidden virtues, not only in heroes and arch-angels, but in gossips and nurses.
Ralph Waldo EmersonGenius 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