Chumps always make the best husbands. When you marry, Sally, grab a chump. Tap his head first, and if it rings solid, don't hesitate. All the unhappy marriages come from husbands having brains. What good are brains to a man? They only unsettle him.
The quote from P.G. Wodehouse's "Doctor Sally" humorously suggests that men who are less intelligent, referred to as "chumps," make better husbands. The advice to "tap his head" implies that a solid, dull mind is preferable when choosing a partner. The notion is that intellect can complicate relationships and lead to unhappiness.
This satirical perspective highlights the author's belief that having a simple-minded partner can lead to a more content marriage. It underscores a playful criticism of the complexities brought by intelligent partners while presenting an unconventional view on love and compatibility.