Thomas Chalmers is quoted in a footnote by the editor of Calvin's commentary on Romans, during the course of Calvin's discussion of Rom 3:21 ('But now apart from law . . .'), about which Calvin writes:
. . . the consciences of men will never be tranquilized until they recumb on the mercy of God alone. (p. 135)
Chalmers is then quoted (without reference) as saying:
The foundation of your trust before God must be either your own righteousness out and out, or the righteousness of Christ out and out. . . . If you are to lean upon your own merit, lean upon it wholly--if you are to lean upon Christ, lean upon him wholly. The two will not amalgamate together; and it is the attempt to do so, which keeps many a weary and heavy-laden inquirer at a distance from rest, and at a distance from the truth of the gospel. Maintain a clear and consistent posture. Stand not before God with one foot upon a rock and the other upon a treacherous quicksand. . . . We call upon you not to lean so much as the weight of one grain or scruple of your confidence upon your own doings--to leave the ground entirely, and to come over entirely to the ground of a Redeemer's blood and a Redeemer's righteousness. (135 n. 2)
Something I forget every day--and even the forgetfulness is forgiven.