Billy Graham
In his first year of college, he found both the schoolwork and rules too hard. As a result, he almost had to leave school, but Bob Jones, Sr., the founder of the college, said that in doing that, he would throw his life away. He told Graham, "At best, all you could amount to would be a poor country Baptist preacher somewhere out in the sticks... You have a voice that pulls. God can use that voice of yours. He can use it mightily."