One person can completely change the character of a country and the eternal destiny of its people by dropping a single seed in the fertile ground of a soul prepared by the Lord. Eternity alone will reveal the results of your efforts. "And let us not be weary in well doing: for in due season we shall reap, if we faint not" (Galatians 6:9).
When you give out a tract—don't forget that God is glorified by every tract you distribute. It remains a fact, whether the offer is received or rejected, that God in His sovereign grace has extended full and eternal salvation by means of that tract to the receiver. He can never say he was not told of God's loving offer.