Pavel Chekov, navigator of the starship Enterprise in the original
TV series Star Trek (1966-1969), played by Walter Koenig
Anton Chekhov, Russian playwright and short-story writer, 1860-1904,
author of The Cherry Orchard.
It's notoriously easy to find misquotes on the Internet. I did my best to verify the sources of these quotes, and any that were really iffy did not make the cut, but it's possible some less than perfectly verified ones slipped through; if so, I apologize, and please let me know.