There was a peace, a serenity, an absence of all sense of responsibility, an absence of worry, an absence of care, grief, perplexity; and the presence of a deep content and unbroken satisfaction in that hundred million years of holiday which I look back upon with a tender longing and with a grateful desire to resume, when the opportunity comes.
There's definitely lots of good stuff in Mark Twain! His "Connecticut Yankee" will always be one of my favorite books, largely for its can-do and anti-religious content. But here is he saying that he was "alive" during that hundred million years? ("presence of a deep ...satisfaction?")