Dwight L. Moody
The power of a simple gospel tract, placed in the hands of a willing servant of God, can never be underestimated. It can lead a soul to Christ and transform a life of eternity.

And I will give them one heart, and a new spirit I will put within them. I will remove the heart of stone from their flesh and give them a heart of flesh, that they may walk in my statutes and keep my rules and obey them. And they shall be my people, and I will be their God.
Ezekiel 11:19-20