Just a couple of the quotes about him that I like:
“His zeal in the cause of freedom was infinitely superior to mine. Mine was as the taper light, his was as the burning sun. Mine was bounded by time. His stretched away to the silent shores of eternity. I could speak for the slave. John Brown could fight for the slave. I could live for the slave. John Brown could die for the slave.”
-Frederick Douglass
"That new saint, than whom nothing purer or more brave was ever led by into conflict and death, — the new saint awaiting his martyrdom, and who, if he shall suffer, will make the gallows glorious like the cross."
-Ralph Waldo Emerson