The Blockade Laws are about as rascally an invention as the old Corn Laws. Suppose Tom Sayers lived in a street, and on the opposite side lived a shopkeeper with whom he has been in the habit of dealing. Tom quarrels with his shopkeeper and forthwith sends him a challenge to fight, which is accepted. Tom, being a powerful man, sends word to each and every householder in the street that he is going to fight the shopkeeper, and that until he has finished fighting no person in the street must have any dealings with the shopkeeper. "We have nothing to do with your quarrel," say the inhabitants, "and you have no right to stop our dealings with the shopkeeper".

Letter to Henry Asworth (3 September, 1864).