I've been having a lot of fun here at the SIGMOD annual conference, attaching faces to names like Stonebraker, Hellerstein, Aoki, Seltzer (if these do not ring a bell, you ain't read enough Postgres source code lately). I felt I had to pass along this gem from Joe Hellerstein, right after he observed that he knew the PG sources quite well, and he'd noticed MySQL was a lot smaller:
"Postgres is bloatware by design: it was built to house PhD theses."
immediately followed by
"The current maintainers [he's looking right at me while he says this] have done a great job of trimming the fat. I know that *my* thesis is gone entirely."