Everything perfect in its kind has to transcend its own kind, it must become something different and incomparable. In some notes the nightingale is still a bird; then it rises above its class and seems to suggest to every winged creature what singing is truly like. – Johann von Goethe

Half the modern drugs could well be thrown out the window, except that the birds might eat them. – Martin H. Fischer (1879–1962)

One must ask children and birds how cherries and strawberries taste. – Johann Wolfgang von Goethe