When there is a structural imbalance, opposite-coloured bishops tend to favour the attacker because the defender is often powerless to prevent the infiltration of his position. James Rizzitano, Understanding Your Chess
The conditions for a successful wing attack are either an advantage in the centre or at least a solid, albeit passive central position. Luděk Pachman, Complete Chess Strategy 3: Play On The Wings
Winning chess has a lot to do with playing good moves, but it has more to do with not playing bad ones. If you play 10 excellent moves, 10 average ones and then a lulu, there is every likelihood that your opponent may still win without having played as well as you for 90% of the game. Ian Mullen, Master Chess: A Course In 21 Lessons
One good way to exploit a strong central advantage is to use the extra space [it gives] your pieces to launch a flank attack. Richard Palliser, Starting Out: Closed Sicilian
Activity is vital in endgames. If you are defending, don't defend absolutely passively unless either the draw is cast-iron or you are absolutely forced to. Jon Speelman, Endgame Preparation
If you face a choice between equally good continuations, there is no need to contemplate for long. Quite the opposite: you can choose one without making a big mistake. Ján Markoš, The Secret Ingredient To Winning At Chess
Chess patterns will often repeat themselves according to the opening that was employed, which is why playing through complete games with a particular opening will help someone play that opening well. Nigel Davies, The Rules Of Winning Chess