“For Hume, Pyrrhonism, like other philosophies, is too ready to assume that our actions are, or at least ought to be, guided by reason at all times. That is looking in the wrong place for the sources of our motivation. The world itself never provides adequate motivation for our choices. It is not the weighing of external evidence but internal desire that determines judgement and action: ‘Nothing can oppose or retard the impulse of passion, but a contrary impulse.’ Indeed, as Bernard Williams later argued, perhaps the very idea of a (purely) external reason is incoherent because there is no account of what is involved in accepting an external reason that does not invoke internal motivation.” ReasonPhilosophySkepticismDavid Hume Book:The Concept of the Social: Scepticism Idleness and Utopia Source: The Concept of the Social: Scepticism Idleness and Utopia