God has to be searched and invoked in the secret of a rational soul, which is called the interior man.
(De magistro 1)
I thank you, Lord, my joy and my glory, my hope and my God. I thank you for your gifts to me. Keep them unharmed for me: they will be the making of me, and I shall be with you for my being is your gift.
(Confessions I, 20)
Necessity is the mother of all human actions.
(En. in ps. 83, 8)