The Player of Games (Culture, #2)

by Iain M. Banks

Another change, it thought. The man had altered, slipped deeper into the game and the society. It had been warned this might happen. One reason was that Gurgeh was speaking Eächic all the time. Flere-Imsaho was always a little dubious about trying to be so precise about human behavior, but it had been briefed that when Culture people didn’t speak Marain for a long time and did speak another language, they were liable to change; they acted differently, they started to think in that other language, they lost the carefully balanced interpretative structure of the Culture language, left its subtle shifts of cadence, tone and rhythm behind for, in virtually every case, something much cruder.