The desire of heaven is holy. God wishes us frequently to desire it, and that is the reason He has filled our life with suffering, persecution, and the cross. It is for that He permits the inconstancy of human friendships. He does not want us to be attached to the goods of this world, nor to any one in the world. We are not made for one another, but for God alone. The happiness of this world is but a point without continuity, without length. One cannot attach himself to it for any length of time, cannot establish himself in it.