I like Simon's version better: it flows without the awkward pause for the comma.
Yep, it seems that often epigrams are made more epigrammatic by the open-source process of people misquoting them. I went looking up what I thought was another example of this, but Wiktionary calls it "[l]ikely traditional" (though the only other citation is roughly contemporary with Maslow).
Here's the new thread for posting quotes, with the usual rules: