 And what my book introduces, and again, in answer to your question, what I would want to leave people with, it introduces what I call the survivalist interpretation of the founding period. Another reason, not the reason, but another reason in the understanding of complex history that they perpetuated slavery is, if any of the northern states had said, we are not going to continue in this union with the southern states unless we adopt a plan for the gradual emancipation of enslaved people,