A technical note-- Tolstoy uses summary to excellent effect on p. 1114:
The princess [Marya], wincing from the desire to hold back her tears, sat beside Natasha and for the first time listened to the story of those last days of the love btween her brother and Natasha.
This tormenting and joyful story was evdiently necessary for Natasha.
She spoke, mixing the most trifling details with her innermost secrets, and it seemed she could never finish. She repeated the same things several times.
Had Tolstoy shown rather than told, ayy it would have been tedious. So here's an example of an exception to the old workshop saw, "show don't tell."