When my opponent has sixteen men and I have fourteen, I am only one eighth weaker than he, but when I have exchanged thirteen more men he will be three times as strong as I am.
 Leo Tolstoy, War and Peace (1869). copy citation

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Author Leo Tolstoy
Source War and Peace
Topic exchange time
Date 1869
Language English
Reference
Note Translated by Louise and Aylmer Maude
Weblink http://www.gutenberg.org/files/2600/2600-h/2600-h.htm

Context

“If the commanders had been guided by reason, it would seem that it must have been obvious to Napoleon that by advancing thirteen hundred miles and giving battle with a probability of losing a quarter of his army, he was advancing to certain destruction, and it must have been equally clear to Kutúzov that by accepting battle and risking the loss of a quarter of his army he would certainly lose Moscow. For Kutúzov this was mathematically clear, as it is that if when playing draughts I have one man less and go on exchanging, I shall certainly lose, and therefore should not exchange. When my opponent has sixteen men and I have fourteen, I am only one eighth weaker than he, but when I have exchanged thirteen more men he will be three times as strong as I am. Before the battle of Borodinó our strength in proportion to the French was about as five to six, but after that battle it was little more than one to two: previously we had a hundred thousand against a hundred and twenty thousand; afterwards little more than fifty thousand against a hundred thousand.” source