No, I didn't say it, she did:
Sure, as a professor, Indy wears a bowtie and acts mild-mannered, but if you're looking for a lifetime of monogamy, don't marry someone who spends months on end at remote sites with a gaggle of worshipful students. Marion shoulda known.
Like most academics, archy profs have a nasty tendency to divorce their wives and marry their graduate students. Or undergraduates. I know of one guy personally who ended up dating and marrying an undergrad, though he did NOT make the first move. Total no-no these days, as it should be. Not a bad little Q&A.