Theodore Roosevelt actually said...

"From now on throughout your lives there can be no slackness in the performance of duty on your part."

"Of course you must have the ability to stand up to the hammering; the courage, the daring, the resolution to endure."

"With righteousness must go strength to make that righteousness of avail."

"We are Americans, and that means that we treat Americanism primarily as a matter of spirit and purpose."