We Americans have many grave problems to solve, many threatening evils to fight, and many deeds to do, if, as we hope and believe, we have the wisdom, the strength, and the courage and the virtue to do them. But we must face facts as they are. We must neither surrender ourselves to a foolish optimism, nor succumb to a timid and ignoble pessimism.

The Works of Theodore Roosevelt: American ideals, with a biographical sketch by F. V. Greene. Administration (ed. 1897)