The lives of millions of people, that is, through his long and ultimately successful effort to end the slave trade and then slavery. But William Wilberforce, whose feast day is celebrated today, couldn't have done it without the help of a fellowship of men and women inspired by the teachings of Christ. The fellowship included -
The abolitionist admiral who reformed the Royal Navy, which went into action because the slave trade couldn't be abolished with a simple edict
A truly audacious slave whose autobiography swept Britain
The slave trader turned abolitionist who wrote Amazing Grace and encouraged Wilberforce to stay in Parliament and defeat the slave traders
The woman (married to the admiral) who encouraged a vicar who knew slavery firsthand to write about it and get the facts before Parliament
The hundreds of thousands of women who refused to buy sugar while the trade continued
The young Cambridge scholar who rode thousands of miles across Britain, urging the people to end the trade
The Society of Friends who supported him
The slaves who rose in rebellion
The British people.
No, it wasn't one man. It was all of them working together, struggling for more than twenty years to advance their cause, and refusing to quit. This is their feast day.