"Man is a free agent but he cannot originate the love of God in his heart. His will is free in the sense that it is not controlled by any force outside of himself. As the “bird” with a broken wing is “free” to fly but not able, so the natural man is free to come to God but not able. How can he repent of his sin when he loves it? How can he come to God when he hates him? This is the inability of the will under which man labors.”
~ Lorraine Boettner 1901-1990, "Total Depravity"