Although the Knight is generally considered to be on a par with the Bishop in strength, the latter piece is somehat stronger in the majority of cases in which they are opposed to each other.
Jose Raul CapablancaNinety percent of the book variations have no great value, because either they contain mistakes or they are based on fallacious assumptions; just forget about the openings and spend all that time on the endings.
Jose Raul Capablanca