If you love truth be a lover of silence. Silence like the sunlight will illuminate you in God and will deliver you from the phantoms of ignorance. Silence will unite you to God.
~ Isaac of Nineveh
For some birds, songs are learned by listening to their parents and neighbors during the first year. For other birds, songs are hardwired -- the music is scored in their brains from the beginning. For mockingbirds, singing is a lifetime of choir practice and talent shows, picking up new tunes and modifying old ones.