The first corporation founded in the 13 Colonies was Harvard College (1636), designed primarily to train young men for the clergy. A leading theorist was the Puritan theologian Cotton Mather (1662–1728), who in 1710 published a widely read essay, "Bonifacius, or an Essay to Do Good." Mather worried that the original idealism had eroded, so he advocated philanthropic benefaction as a way of life. Though his context was Christian, his idea was also characteristically American and explicitly Classical, on the threshold of the Enlightenment.