The quote is “a jack of all trades is a master of none, but oftentimes better than a master of one.”
Wikipedia says “there are no known instances of this second line dated to before the twenty-first century”:
https://en.wikipedia.org/w/index.php?title=Jack_of_all_trade...
The quote is “a jack of all trades is a master of none, but oftentimes better than a master of one.”