— Bernard of Clairvaux French abbot, theologian 1090 - 1153
Context: It’s not as if grace did one half of the work and free choice the other; each does the whole work, in its own peculiar contribution. Grace does the whole work, and so does free choice – with this one qualification: That whereas the whole is done in free choice, so is the whole done of grace.
On Grace & Free Choice, chap 14.(de Gratia Et Libero Arbitrio), Daniel O'Donovan, trans., Introduction, Bernard McGinn, Cistercian Publications, 1988, p. 37. https://books.google.com/books?id=ODcqAAAAYAAJ&q=%22not+as+if+grace+did+one+half+of+the+work+and+free+choice+the+other%22&dq=%22not+as+if+grace+did+one+half+of+the+work+and+free+choice+the+other%22&hl=en&sa=X&ved=0ahUKEwjT7I76jK_TAhUFNiYKHZrCB3gQ6AEIODAE (Note: Fr. Harry J. McSorley, C.S.P. Commenting on this teaching of Bernard, states: "We are indebted to Bernard of Clairvaux … for the clarification that grace and free will are not related as partial causes - which would be a false synergism - but as total causes of the act of justification, each on its own proper plane. Bernard maintains the Catholic-Augustinian tradition by insisting that man's natural freedom (liberum arbitrium) remains even after the fall. It is a wretched, but nonetheless integral free will. This natural freedom of the will, possessed by the just and sinners alike, enables us to will, but not to will what is good. It is grace alone that gives us good will." Luther, Right or Wrong, (1969), Newman Press / Augsburg Publishing House, p. 133 https://books.google.com/books?id=KaRAAAAAIAAJ&pg=PA133&dq=%22for+the+clarification+that+grace+and+free+will+are+not+related+as+partial+causes%22&hl=en&sa=X&ved=0ahUKEwjX5fjGjK_TAhUKRSYKHdmfBCsQ6AEIIjAA#v=onepage&q=%22for%20the%20clarification%20that%20grace%20and%20free%20will%20are%20not%20related%20as%20partial%20causes%22&f=false