The term total depravity, as distinguished from utter depravity, refers to the effect of sin and corruption on the whole person. To be totally depraved is to suffer from corruption that pervades the whole person. Sin affects every aspect of our being: the body, the soul, the mind, the will and so forth. The total or whole person is corrupted by sin. No vestigial “island of righteousness” escapes the influence of the Fall. Sin reaches into every aspect of our lives, finding no shelter of isolated virtue.
Sproul, R.C.; Grace Unknown: The Heart of Reformed Theology; Baker Books; Grand Rapids, MI; copyright 1997; p. 118