Some few, & I am one, even wish to God, though at the loss of millions of lives, that the North would proclaim a crusade against Slavery. In the long run, a million horrid deaths would be amply repaid in the cause of humanity.... Great God how I shd like to see that greatest curse on Earth Slavery abolished.
The Correspondence of Charles Darwin: (ed. Cambridge University Press, 1994) - ISBN: 9780521451567