"It required time and the cumulation of events to bring about a state of feeling that would tolerate the suggestion of using colored men in the Union army. Mr. Douglass more than any other one man, helped to bring about this change. It finally became evident that if the Negroes were good enough to be employed in the Confederate ranks, as laborers, they ought to be good enough for like service in the Union lines."
January 1, 1970
https://en.wikiquote.org/wiki/Frederick_Douglass