Here he witnessed the horrific treatment of enslaved Africans, which instilled in him his lifelong abolitionist principles. Lay later settled in Philadelphia, and was made unpopular among his fellow Quakers by his confrontational anti-slavery stance.
Here he saw the inhumane treatment of enslaved Africans, which formed the foundation of his lifelong dedication to ending slavery. Later, Lay relocated to Philadelphia and was disapproved by his fellow Quakers due to his confrontational stance against slavery.