“When the ceremony ended Anne and I stayed on the field to greet friends, many of whom had traveled to share the ceremony with us. In one respect it was a difficult day at the end of a difficult month. But in the broader view of life, it was a magical evening at the end of an incredible journey we shared. We walked back over to the quarters we would move out of a few days later, and found friends in the yard and almost every room. At one point I saw Mike Hall, Charlie Flynn, Shawn Lowery, and Casey Welch standing in the fading summer light. I thought of my father, of my first day at West Point, and of our cold Christmas Eve flight over Afghanistan seven months before. The final words of my last speech in uniform, spoken just an hour before were repeated in my mind: "If I had it to do over again, I'd do some things in my career differently, but not many. I believed in people, and I still believe in them. I trusted and I still trust. I cared and I still care. I wouldn't have it any other way… To the young leaders of today and tomorrow, it's a great life. Thank you."”

Phantastes (1858)
Context: Thou goest thine, and I go mine —
Many ways we wend;
Many days, and many ways,
Ending in one end.
Many a wrong, and its curing song;
Many a road, and many an inn;
Room to roam, but only one home
For all the world to win.

Source: The Adventures of Sherlock Holmes

Everything has an Ending.
Bartlett's Familiar Quotations, 10th ed. (1919)

Travellers (1895).

Page 74
Faith and Politics (2006)

A Book of Verses (1888)

1990s, Farewell speech (1999)
Context: Today, on this day that is so extraordinarily important for me, I want to say just a few more personal words than usual.
I want to ask for your forgiveness.
For the fact that many of the dreams we shared did not come true. And for the fact that what seemed simple to us turned out to be tormentingly difficult. I ask forgiveness for not justifying some hopes of those people who believed that at one stroke, in one spurt, we could leap from the gray, stagnant, totalitarian past into the light, rich, civilized future. I myself believed in this, that we could overcome everything in one spurt.
I turned out to be too naive in something. In some places, problems seemed to be too complicated. We forced our way forward through mistakes, through failures. Many people in this hard time experienced shock.

Oliver Wendell Holmes, Sr., The Poetical Works of Oliver Wendell Holmes, Kessinger Publishing (2005).
Misattributed