Who said "The war was not ended by treaties, but by truths."?

This quote is attributed to Frederick Douglass.

The war was not ended by treaties, but by truths. - Frederick Douglass

"The war was not ended by treaties, but by truths."

Frederick Douglass War

Abolitionist, Orator American 1818–1895

"It is not the color of the skin that makes a man a slave or a free man, it is the condition of his mind."

"Once you learn to read, you will be forever free."

"If there is no struggle, there is no progress."

"I am not included within the pale of this glorious anniversary! Your high independence only reveals the immeasurable distance between us."

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."