Father of modern Protestant missions
"Expect great things; attempt great things."
At a meeting of Baptist leaders in the late 1700s, a newly ordained minister stood to argue for value of overseas missions. He was abruptly interrupted by an older minister who said, "Young man, sit down! You are an enthusiast. When God pleases to convert the heathen, he'll do it without consulting you or me."
Read more about William Carey.
Source: Christian History