The meaning of the Declaration was a recurring topic in the famed debates between Lincoln and Stephen Douglas in 1858. Douglas argued that the phrase "all men are created equal" in the Declaration referred to white men only. The purpose of the Declaration, he said, had simply been to justify the independence of the United States, and not to proclaim the equality of any "inferior or degraded race". Lincoln, however, thought that the language of the Declaration was deliberately universal, setting a high moral standard to which the American republic should aspire. "I had thought the Declaration contemplated the progressive improvement in the condition of all men everywhere", he said. During the seventh and last joint debate with Steven Douglas at Alton, Illinois, on October 15, 1858, Lincoln said about the declaration: