It is advantageous for the side with a cramped position to exchange pieces. Accordingly, the player with the advantage in space will benefit from avoiding such exchanges. Valeri Beim, Lessons In Chess Startegy
Good endgame technique can usually compensate for weaker play in the previous phases; in practice, an impressive number of half and full points can be saved by superior play in this last part of the game. Mihail Marin, Secrets Of Chess Defence
When measuring compensation for an exchange, it is always a good idea to check out the mobility and effectiveness of the rooks of the side that enjoys an 'extra' one. Peter Wells, Winning With The Trompowsky
The great thing about an opening like the King's Indian Attack as White is that it is more about piece-placement and positional motifs that it is about specific book lines. Steve Stoyko, Lecture - Kenilworth Chess Club