There is, as I remember, a passage in Xenophon where he tells us that we ought so much the more seldom to call upon God, by how much it is hard to compose our souls to such a degree of calmness, patience, and devotion as it ought to be in at such a time; otherwise our prayers are not only vain and fruitless, but vicious: “forgive us,” we say, “our trespasses, as we forgive them that trespass against us”; what do we mean by this petition but that we present to God a soul free from all rancour and revenge? And yet we make nothing of invoking God’s assistance in our vices, and inviting Him into our unjust designs: