To Howells Clemens wrote:

Imagine what it was like to see a bullet-shredded old battle-flag
reverently unfolded to the gaze of a thousand middle-aged soldiers,
most of whom hadn't seen it since they saw it advancing over
victorious fields when they were in their prime. And imagine what
it was like when Grant, their first commander, stepped into view
while they were still going mad over the flag, and then right in the
midst of it all somebody struck up "When we were marching through
Georgia." Well, you should have heard the thousand voices lift that
chorus and seen the tears stream down. If I live a hundred years I
sha'n't ever forget these things, nor be able to talk about them. I
sha'n't ever forget that I saw Phil Sheridan, with martial cloak and
plumed chapeau, riding his big black horse in the midst of his own
cannon; by all odds the superbest figure of a soldier. I ever
looked upon!
Grand times, my boy, grand times!

Mark Twain declared afterward that he listened to four speeches that night which he would remember as long as he lived. One of them was by Emory Storrs, another by General Vilas, another by Logan, and the last and greatest by Robert Ingersoll, whose eloquence swept the house like a flame. The Howells letter continues:

I doubt if America has ever seen anything quite equal to it; I am well satisfied I shall not live to see its equal again. How pale those speeches are in print, but how radiant, how full of color, how blinding they were in the delivery! Bob Ingersoll's music will sing through my memory always as the divinest that ever enchanted my ears. And I shall always see him, as he stood that night on a dinner-table, under the flash of lights and banners, in the midst of seven hundred frantic shouters, the most beautiful human creature that ever lived. "They fought, that a mother might own her child." The words look like any other print, but, Lord bless me! he borrowed the very accent of the angel of mercy to say them in, and you should have seen that vast house rise to its feet; and you should have heard the hurricane that followed. That's the only test! People may shout, clap their hands, stamp, wave their napkins, but none but the master can make them get up on their feet.

Clemens's own speech came last. He had been placed at the end to hold the house. He was preceded by a dull speaker, and his heart sank, for it was two o'clock and the diners were weary and sleepy, and the dreary speech had made them unresponsive.

They gave him a round of applause when he stepped up upon the table in front of him—a tribute to his name. Then he began the opening words of that memorable, delightful fancy.

"We haven't all had the good-fortune to be ladies; we haven't all been generals, or poets, or statesmen; but when the toast works down to the babies—we stand on common ground—"

The tired audience had listened in respectful silence through the first half of the sentence. He made one of his effective pauses on the word "babies," and when he added, in that slow, rich measure of his, "we stand on common ground," they let go a storm of applause. There was no weariness and inattention after that. At the end of each sentence, he had to stop to let the tornado roar itself out and sweep by. When he reached the beginning of the final paragraph, "Among the three or four million cradles now rocking in the land are some which this nation would preserve for ages as sacred things if we could know which ones they are," the vast audience waited breathless for his conclusion. Step by step he led toward some unseen climax—some surprise, of course, for that would be his way. Then steadily, and almost without emphasis, he delivered the opening of his final sentence:

"And now in his cradle, somewhere under the flag, the future illustrious commander-in-chief of the American armies is so little burdened with his approaching grandeurs and responsibilities as to be giving his whole strategic mind, at this moment, to trying to find out some way to get his own big toe into his mouth, an achievement which (meaning no disrespect) the illustrious guest of this evening also turned his attention to some fifty-six years ago."

He paused, and the vast crowd had a chill of fear. After all, he seemed likely to overdo it to spoil everything with a cheap joke at the end. No one ever knew better than Mark Twain the value of a pause. He waited now long enough to let the silence become absolute, until the tension was painful, then wheeling to Grant himself he said, with all the dramatic power of which he was master: