With the release of his newest book, The Immortal Nicholas, Glenn has taken the opportunity to express his thoughts on some of the themes covered in the book.
Right away in the first chapter is a compelling scene when a father loses his only son.
"He doesn't know where to go. He's lost everything," Glenn said.
This sets the tone for the rest of the book, in which Glenn carefully weaves the story of the true meaning of Christmas with the character of Santa Claus.
"You see the relationship to that man who lost his son with another son a thousand years later," Glenn said.
Watch the clip below. For more information about the book, click here.