Wilberforce's Abolition Speech - 08 Blindness
One would think it had been determined to heap upon them all the varieties of bodily pain, for the purpose of blunting the feelings of the mind; and yet, in this very point (to show the power of human prejudice) the situation of the slaves has been described by Mr. Norris, one of the Liverpool delegates, in a manner which, I am sure will convince the House how interest can draw a film across the eyes, so thick, that total blindness could do no more; and how it is our duty therefore to trust not to the reasonings of interested men, or to their way of colouring a transaction. Their apartments, says Mr. Norris, are fitted up as much for their advantage as circumstances will admit.
(Voice of William Wilberforce provided by Chris Cade)