A Serious Call to a Devout and Holy Life - by William Law

William Law's book, entitled A Serious Call to a Devout and Holy Life, changed William Wilberforce.  Pondering how he could help others, instead of lavishing life's pleasures on himself, Wilberforce became a leading voice against the slave trade.

Thanks to Google Books, we can examine the book online. 

Credits

Image of book cover, online courtesy Library of Congress.