The universe is awesome in its size, astonishing in its intricacy. Every part of it fits neatly with every other part. Consider an ant, an anteater, an antirrhinum. each is perfectly suited to its role (or ‘purpose’). The ant exists to be eaten by anteaters, the anteater exists to eat ants, and the antirrhinum… well, bees like it, and that’s a good thing.

– it’s a type of flower |
Terry Pratchett, Ian Stewart, and Jack Cohen, The Science of Discworld III: Darwin’s Watch