Hence, then, the one peaceful and trustworthy tranquillity, the one solid and firm and constant security, is this, for a man to withdraw from these eddies of a distracting world, and, anchored on the ground of the harbour of salvation, to lift his eyes from earth to heaven; and having been admitted to the gift of God, and being already very near to his God in mind, he may boast, that whatever in human affairs others esteem lofty and grand, lies altogether beneath his consciousness. He who is actually greater than the world can crave nothing, can desire nothing, from the world. How stable, how free from all shocks is that safeguard; how heavenly the protection in its perennial blessings,—to be loosed from the snares of this entangling world, and to be purged from earthly dregs, and fitted for the light of eternal immortality! He will see what crafty mischief of the foe that previously attacked us has been in progress against us. We are constrained to have more love for what we shall be, by being allowed to know and to condemn what we were. Neither for this purpose is it necessary to pay a price either in the way of bribery or of labour; so that man’s elevation or dignity or power should be begotten in him with elaborate effort; but it is a gratuitous gift from God, and it is accessible to all. As the sun shines spontaneously, as the day gives light, as the fountain flows, as the shower yields moisture, so does the heavenly Spirit infuse itself into us. When the soul, in its gaze into heaven, has recognised its Author, it rises higher than the sun, and far transcends all this earthly power, and begins to be that which it believes itself to be.
Do you, however, whom the celestial warfare has enlisted in the spiritual camp, only observe a discipline uncorrupted and chastened in the virtues of religion. Be constant as well in prayer as in reading; now speak with God, now let God speak with you, let Him instruct you in His precepts, let Him direct you. Whom He has made rich, none shall make poor; for, in fact, there can be no poverty to him whose breast has once been supplied with heavenly food. Ceilings enriched with gold, and houses adorned with mosaics of costly marble, will seem mean to you, now when you know that it is you yourself who are rather to be perfected, you who are rather to be adorned, and that that dwelling in which God has dwelt as in a temple, in which the Holy Spirit has begun to make His abode, is of more importance than all others. Let us embellish this house with the colours of innocence, let us enlighten it with the light of justice: this will never fall into decay with the wear of age, nor shall it be defiled by the tarnishing of the colours of its walls, nor of its gold. Whatever is artificially beautified is perishing; and such things as contain not the reality of possession afford no abiding assurance to their possessors. But this remains in a beauty perpetually vivid, in perfect honour, in permanent splendour. It can neither decay nor be destroyed; it can only be fashioned into greater perfection when the body returns to it.
These things, dearest Donatus, briefly for the present. For although what you profitably hear delights your patience, indulgent in its goodness, your well-balanced mind, and your assured faith—and nothing is so pleasant to your ears as what is pleasant to you in God,—yet, as we are associated as neighbours, and are likely to talk together frequently, we ought to have some moderation in our conversation; and since this is a holiday rest, and a time of leisure, whatever remains of the day, now that the sun is sloping towards the evening, let us spend it in gladness, nor let even the hour of repast be without heavenly grace. Let the temperate meal resound with psalms;2 and as your memory is tenacious and your voice musical, undertake this office, as is your wont. You will provide a better entertainment for your dearest friends, if, while we have something spiritual to listen to, the sweetness of religious music charm our ears.

Cyprian of Carthage, “The Epistles of Cyprian,” in Fathers of the Third Century: Hippolytus, Cyprian, Novatian, Appendix, ed. Alexander Roberts, James Donaldson, and A. Cleveland Coxe, trans. Robert Ernest Wallis, vol. 5, The Ante-Nicene Fathers (Buffalo, NY: Christian Literature Company, 1886), 279–280.