We may choose our master, but God or mammon we must serve. We cannot possibly be in a neutral or intermediate state. Such a state does not exist. If we will not be Christ's servants, we are forthwith Satan's; and Christ set us free from Satan only by making us His servants. Satan's kingdom touches upon Christ's, the world touches on the Church; and we cease to be Satan's property by becoming Christ's.
--Blessed John Henry Newman,"The Strictness of the Law of Christ", Parochial and Plain Sermons, Vol. 4