We must remember that the people of all the States are entitled to all the privileges and immunities of the citizen of the several States. We should bear this in mind, and act in such a way as to say nothing insulting or irritating. I would inculcate this idea, so that we may not, like Pharisees, set ourselves up to be better than other people.

The Writings of Abraham Lincoln: 1858-1862 (ed. 1862)