" That in turn led him to campaign for the passage of a certain act in Great Britain in 1833.
As a religious man he championed the namesake religion in his "On the Excellence of Christianity," which contains his distinction between Christians and "real Christians." James Boswell described him as the "shrimp that became a whale," and he was convinced to begin political action through the sermons of John Newton. This man joined a society started by Thomas Buxton, and he worked with Josiah Wedgewood to create a brooch that featured the saying "Am I not a man and a brother?"  He worked in a group including Thomas Clarkson, Granville Sharpe and Hannah More, the so-called Clapham Sect, which was part of a group that brought to Parliament's attention the dangers of the "Middle Passage." That in turn led him to campaign for the passage of a certain act in Great Britain in 1833. For 10 points, name this British politician who campaigned to abolish slavery.
As a religious man he championed the namesake religion in his "On the Excellence of Christianity," which contains his distinction between Christians and "real Christians."
William Wilberforce