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.

As quoted in: A Lecture On John Brown

The Frederick Douglass Papers at the Library of Congress