Ecclesiastes 9:15
"Now there was found in it a poor wise man, and he by his wisdom delivered the city; yet no man remembered that same poor man."
Cross References (ranked by relevance)
Yet did not the chief butler remember Joseph, but forgat him.
Better is a poor and a wise child than an old and foolish king, who will no more be admonished.
Then the woman went unto all the people in her wisdom. And they cut off the head of Sheba the son of Bichri, and cast it out to Joab. And he blew a trumpet, and they retired from the city, every man to his tent. And Joab returned to Jerusalem unto the king.
For there is no remembrance of the wise more than of the fool for ever; seeing that which now is in the days to come shall all be forgotten. And how dieth the wise man? as the fool.