Be cautious of playing your Queen in front of your King and in subjecting yourself to a discovered check. It is better when check is given to your King to interpose a man that attacks the checking Piece than with one that does not. Howard Staunton
To interpose the threat of physical destruction between a man and his perception of reality, is to negate and paralyze his means of survival to force him to act against his own judgment, is like forcing him to act against his own sight. Ayn Rand
All active mass movements strive, therefore, to interpose a fact-proof screen between the faithful and the realities of the world. Eric Hoffer
When the King is checked, or any valuable Piece in danger from the attack of an enemy, you are said to interpose a man when you play it between the attacked and attacking Piece. Howard Staunton