Maya Angelou—A bird doesn’t sing because it has an answer, it sings because it has a song. = Because It Has a Song.
Meanwhile, enjoy this statement from Alain de Botton in “How Proust Can Change Your Life.” A parenthetical remark about Marcel Proust: (though Proust did happen to feel that ‘one must never miss an opportunity of quoting things by others which are always more interesting than those one thinks up oneself.’)