“For no one can acquire the perfection of love while still in the flesh except those saints who suffer to the point of martyrdom, and confess their faith despite all persecution. Whoever has reached this state is completely transformed, and does not easily feel desire even for material sustenance. For what desire will someone nourished by divine love feel for such things? It is for this reason that St Paul proclaims to us the future joy of the saints when he says: ‘For the kingdom of God is not food and drink, but righteousness, peace and joy in the Holy Spirit,’ which are the fruits of perfect love. Those who have advanced to perfection are able to taste this love continually, but no one can experience it completely until ‘what is mortal in us is swallowed up by life.’”
St Diadochos of Photiki, On Spiritual Knowledge, 90