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.

For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.
Romans 1:20