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

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.

Even the laziest King flees wildly in the face of a double check!

When I today ask myself whence I got the moral courage, for it takes moral courage to make a move (or form a plan) running counter to all tradition, I think I may say in answer, that it was only my intense preoccupation with the problem of the blockade which helped me to do so.

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.