Most chess players know, thanks to the study of master games, that two bishops are stronger than two knights or than bishop and knight, though very few know the reason for this advantage and how to turn it to account.
Richard RetiIt is a profound mistake to imagine mistake to imagine that the art of combination depends only on natural talent, and that it cannot be learned. Every player knows that all (or almost all) combinations arise from a recollection of familiar elements.
Richard RetiIt is the aim of the modern school, not to treat every position according to one general law, but according to the principle inherent in the position
Richard Reti