I have spent time in the company of heroes, I have watched men suffer the anguish of imprisonment, defy appalling cruelty until further resistance is impossible, break for a moment, then recover inhuman strength to defy their enemies once more. All these things and more I have seen. And so will you. I will go to my grave in gratitude to my Creator for allowing me to stand witness to such courage and honor. And so will you.

My time is slipping by. Yours is fast approaching. You will know where your duty lies. You will know.

(John McCain, 1993 Commencement Address at the U.S. Naval Academy)