The knight of QB3 is under obligation, the moment the enemy gives him the chance, of undertaking an invasion of the center by Kn-Q5.

First restrain, next blockade, lastly destroy.

The main Objective of any operation in an open file is the eventual Occupation of the seventh or eighth Rank.

Ridicule can do much, for instance embitter the existence of young talents; but one thing is not given to it, to put a stop permanently to the incursion of new and powerful ideas.

The knight of QB3 is under obligation, the moment the enemy gives him the chance, of undertaking an invasion of the center by Kn-Q5.

The passed Pawn is a criminal, who should be kept under lock and key. Mild measures, such as police surveillance, are not sufficient

Do not always be thinking of attack! Moves that safeguard your position are often far more prudent.