It is when we love the most intensely and most humanly that we can recognize how tepid is our love for others. The keenness and intensity of love brings with it suffering, of course, but joy too because it is a foretaste of heaven. When you love people, you see all the good in them, all the Christ in them. God sees Christ, his son, in us. And so we should see Christ in others.
Source: On Pilgrimage