Recalling for the moment our generic distinction of acts and potencies in the understanding, sense appetite, and will, we see that in our understanding we have an external engagement with the world, in our sense appetite a give-and-take with the world, and an outreach into the world in our will. These three are intrinsically connected, for the inner give-and-take presupposes some engagement with the outside, and the deliberate intervention in the world presupposes a certain inner give-and-take.
[Edith Stein, Potency and Act, Redmond, tr., ICS Publications (Washington, DC: 2009) p. 189.]
