Thomas Clarkson — English Activist born on March 28, 1760, died on September 26, 1846

Thomas Clarkson, was an English abolitionist, and a leading campaigner against the slave trade in the British Empire. He helped found The Society for Effecting the Abolition of the Slave Trade and helped achieve passage of the Slave Trade Act of 1807, which ended British trade in slaves... (wikipedia)

Should slavery be abolished there, (and it is an event, which, from these circumstances, we may reasonably expect to be produced in time) let it be remembered, that the Quakers will have had the merit of its abolition.
We cannot suppose therefore that God has made an order of beings, with such mental qualities and powers, for the sole purpose of being used as beasts, or instruments of labour.
Neither can men, by the same principles, be considered as lands, goods, or houses, among possessions. It is necessary that all property should be inferiour to its possessor. But how does the slave differ from his master, but by chance?
Mankind have their local attachments. They have a particular regard for the spot, in which they were born and nurtured.
It appears first, that liberty is a natural, and government an adventitious right, because all men were originally free.