 One objection asserts as obvious that certain human actions are trivial or purposeless (ʿabath); the example given is playing with one’s beard (Avicenna MH: 220–225). This objection challenges the idea that every natural motion has an end or goal. The objection is probably derived from Alexander of Aphrodisias, who claims in On Fate that twiddling with toothpicks and touching and pulling one’s hair do not have a cause in the sense of an end (Sharples 1983: 44). Against this objection, Avicenna maintains that apparently trivial human actions are motivated by unconscious desire for pleasure, the good of the animal soul (Richardson 2015). This argument derives support from Avicenna’s original and influential account of the internal senses, which explains the cognitive bases of such actions (Avicenna ASAN: 43–45, 58–61, 163–69; Black 2000, 2013a).