The imperative to know, and to know rationally for which the prophet is an extreme model- is based on Aristotle’s concept of happiness as the activity which differentiates humans from all other organic life: “the activity of the intellect is thought to be distinguished by hard work (spoud., ijtih.d), since it employs theory, and it does not desire to have any other end at all except itself; and it has its proper pleasure …. Complete happiness (eudaimonia, sa ‘.da) is this (Nicomachean Ethics, 1177b19–25)”.