The snag in this business of falling love . . . is that the parties of the first part so often get mixed up with the wrong parties of the second part, robbed of their cooler judgment by the parties of the second part's glamour. Put it like this. The male sex is divided into rabbits and non-rabbits and the female sex into dashers and dormice, and the trouble is that the male rabbit has a way of getting attracted by the female dasher (who would be fine for the male non-rabbit) and realizing too late that he ought to have been concentrating on some mild, gentle dormouse with whom he could settle down peacefully and nibble lettuce. --P.G. Wodehouse, Jeeves in the Offing

Possibly the most hilarious theory of the complementarity of the sexes I've ever read!

I used to think, erroneously, that Sir Pelham Granville Wodehouse never married, instead remaining a perpetual bachelor a la Bertram Wooster. According to this Wikipedia article, however, at age 33 he married Ethel Wayman, who had a daughter from a previous marriage. Thus, his advice about relationships gains validity according to my aforementioned standards.

Interestingly, Wodehouse and his wife emigrated to the U.S. after World War II (read more about that here).