Quote by Sir John Vanbrugh
You may build castles in the air, and fume, and fret, and grow thin and lean, and pale and ugly, if you please. But I tell you, no man worth having is true to his wife, or can be true to his wife, or ever was, or will be so.
Summary
This quote suggests that despite the fantasies and worries people may have about fidelity in relationships, it declares the belief that no man of value can or will be faithful to his wife. It implies that one may expend significant energy and suffer internally while trying to maintain or expect faithfulness, but it deems such efforts futile.