How do you effect change, change that's big, change that's lasting? Can you, can one person, have that kind of impact? I remember arguing adamantly with my grandfather nearly 24 years ago that one person can change the world. We argued back and forth for a good long while, my grandfather getting more agitated but also more resolute that one person couldn't make any difference at all. "Jesus Christ!" I yelled at him, frustrated but not taking the Lord's name in vain. One man made all the difference. One man's followers changed the world. My grandfather wasn't having any of it. Lincoln. Surely, he would concede that Lincoln freeing the slaves, waging the civil war made a difference? John Wilkes Booth made a difference, as well, changed the course of the nation, possibly.