Jack of all trades, master of none.
Incomplete and conveys the opposite message as the full saying:
Jack of all trades, master of none ..though often times better than a master of one.
@Mort My favorite incorrect quote. Blood is thicker than water.
Literally has the opposite meaning.
Blood of the covenant is thicker than water of the womb.
"Curiosity killed the cat...but Satisfaction brought it back."
"The Blood (of the Covenant) is thicker than (the) Water (of the Womb)."
@Heucuva8 thanks! That one was on my list.
Maybe I'm wrong about this one after all.
It seems "Jack of all trades" may have been the stand alone original with no negative connotation.
https://www.phrases.org.uk/meanings/jack-of-all-trades.html