There is a spiritual wooing and winning of hearts for the Lord Jesus. If you would learn the way, you must ask God to give you a tender heart and a sympathizing soul. I believe that much of the secret of soul-winning lies in having compassion, in having spirits that can be touched with the feeling of human infirmities. Carve a preacher out of granite, and even if you give him an angel’s tongue, he will convert nobody. Put him into the most fashionable pulpit, make his elocution faultless and his matter profoundly orthodox, but so long as he bears within his bosom a hard heart, he can never win a soul. Soul-saving requires a heart that beats hard against the ribs. It requires a soul full of the milk of human kindness. This is the sine qua non of success. This is the chief natural qualification for a soul winner, which, under God and blessed of Him, will accomplish wonders.
—The Soul Winner, 223; bold is in the original; underlined text is in italics in the original