De Somniis (lib. i-ii)

Do thou therefore, O mind, having learnt how mighty a thing the anger of God is, and how great a good the joy of God is, do not do anything worthy to excite his anger to thy own destruction, but study only such things as may be the means of your pleasing God.

And you will find these actions to be not the making of long and unusual journeys, nor the passing over unnavigable seas, or wandering without stopping to take breath to the furthest boundaries of earth and sea: for good actions do not dwell at a distance and have not been banished beyond the confines of the habitable world, but, as Moses says, good is situated near you, and is planted along with you, being united to you in three necessary parts, in the heart, in the mouth, and in the hands: that is to say, in the mind, in the speech, and in the actions; since it is necessary to think and to say, and to do good things, which are made perfect by a union of good design, good execution, and good language. [*](Deuteronomy xxx. 9. )