takes a long time to do a sentence, but plutarch served well for that. and he kept those things going. so that combination. but most of the deep letters are the ones that have drawn the most attention on the world and were those to his best friend. and these were hidden. obviously, some of them were legal, but many weren't. they were hidden in gas mask canisters. they were dug up years later. people would find out where they were. and none of this would exist it can not for the best friend. he saved them. so many people asked to see them, and he stitched them together and made the book. >> and it's an interesting fact about all three of these books that are launching this series. in many ways they're not books that someone sat down to write for a particular audience, the tibetan book of the dead really also stitched together by the person who discovered those texts and sort of americanized them. bonhoeffer, certainly, never would have imagined his letter ors and papers being assembled in this form. and, of course, augustin, although we see him sitting an