REBUKE AND GRACE

How is it then that miserable men dare to be proud, either of their free will, before they are freed, or of their own strength, if they have been freed? They do not observe that in the very mention of free will they pronounce the name of liberty. But “where the Spirit of the Lord is, there is liberty. ” If, therefore, they are the slaves of sin, why do they boast of free will? For by what a man is overcome, to the same is he delivered as a slave. But if they have been freed, why do they vaunt themselves as if it were by their own doing, and boast, as if they had not received? Or are they free in such sort that they do not choose to have Him for their Lord who says to them: “Without me ye can do nothing;” and “If the Son shall make you free, ye shall be free indeed?” 

– Augustine, On Rebuke and Grace, Chp. 52