When you have got an elephant by the hind leg, and he is trying to run away, it's best to let him run.
Notes from Wikiquote
Recollections of the Civil War] (1898)
Without the military help of the black freedman, the war against the South could not have been won.
Slavery is founded in the selfishness of man's nature — opposition to it, in his love of justice.
Beware of rashness, but with energy and sleepless vigilance go forward and give us victories.
Determine that the thing can and shall be done, and then we shall find the way.
Quote text and notes from Wikiquote: Abraham Lincoln (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.