Therefore, we should hate even more the vanity of this world, we should wish to have virtues, to be spiritually rich through a great trade: prayers, tears, cleansing, enlightenment, dispassion, which are the fruits of the eternal life. And the food, the drinks, the garments and all the other things necessary to the body, should be embraced only as much as they are needed in order to live and keep the commandments of God. If we spend our time in this way, every day will be a holiday, and every day we’ll have joy and fearlessness of death. Even if tens of thousands of sorrows come upon us, there is no way that the good conscience can sink.
Saint Theodore the Studite (†826), The Small Catecheses