If worms have the power of acquiring some notion, however rude, of the shape of an object and over their burrows, as seems the case, they deserve to be called intelligent; for they act in nearly the same manner as would man under similar circumstances.
Charles Darwin (2010). “The Works of Charles Darwin, Volume 28: The Formation of Vegetable Mould Through the Action of Worms With Observations on Their Habits”, p.43, NYU Press
