Who said if slavery is not wrong then nothing is wrong but i would not do anything to bring about a war between the free and slave states?

The quote "If slavery is not wrong, then nothing is wrong" is attributed to Abraham Lincoln. He expressed this sentiment in a letter to Albert G. Hodges in 1864, highlighting his moral stance against slavery. Lincoln also emphasized his cautious approach to avoiding conflict between free and slave states, reflecting his desire for gradual emancipation rather than immediate war.