From a homily Pseudo-Chrysostom
Prayer is the light of the soul
The highest good is prayer and conversation with God, because it means that we are in God’s company and in union with him. When light enters our bodily eyes our eyesight is sharpened; when a soul is intent on God, God’s inextinguishable light shines into it and makes it bright and clear. I am talking, of course, of prayer that comes from the heart and not from routine: not the prayer that is assigned to particular days or particular moments in time, but the prayer that happens continuously by day and by night.
Indeed the soul should not only turn to God at times of explicit prayer. Whatever we are engaged in, whether it is care for the poor, or some other duty, or some act of generosity, we should remember God and long for God. The love of God will be as salt is to food, making our actions into a perfect dish to set before the Lord of all things. Then it is right that we should receive the fruits of our labours, overflowing onto us through all eternity, if we have been offering them to him throughout our lives.