"My name is Melisande Stokes and this is my story. I am writing in July 1851 (Common Era, or—let's face it—Anno Domini)...London, England. But I am not a native of this place or time. In fact, I am quite desperate to get out of here...when I'm done writing this Diachronicle, I am going to take it to the very discreet private offices of the Fugger Bank...not to be opened for more than one hundred and sixty years. The Fuggers, above all people in this world, understand the dangers of Diachronic Shear."
January 1, 1970
https://en.wikiquote.org/wiki/Neal_Stephenson