Abraham Lincoln’s “Cooper Union Address” (February 27, 1860)
Neither let us be slandered from our duty by false accusations against us, nor frightened from it by menaces of destruction to the Government nor of dungeons to ourselves. LET US HAVE FAITH THAT RIGHT MAKES MIGHT, AND IN THAT FAITH, LET US, TO THE END, DARE TO DO OUR DUTY AS WE UNDERSTAND IT.
The complete text of Lincoln’s speech, which helped catapult him to the Republican presidential nomination, can be found at the National Park Service’s Lincoln Home site.