American statesman and abolitionist, born in Boston; graduated at Harvard (1830), and was called to the bar in 1834, but found a more congenial sphere in writing and lecturing; during 1837-40 pursued his favourite study of jurisprudence in France, Germany, and England; was brought into public notice by his 4th of July oration (1845) on "The True Grandeur of Nations," an eloquent condemnation of war; became an uncompromising opponent of the slave-trade; was one of the founders of the Free Soil Party, and in 1851 was elected to the National Senate, a position he held until the close of his life, and where he did much by his eloquent speeches to prepare the way for emancipation, and afterwards to win for the blacks the rights of citizenship (1811-1874).