Dead flies make the perfumer’s ointment give off a stench; so a little folly outweighs wisdom and honor.
In these verses Solomon shows, I. What great need wise men have to take heed of being guilty of any instance of folly; for a little folly is a great blemish to him that is in reputation for wisdom and honour, and is as hurtful to his good name as dead flies are to a sweet perfume, not only spoiling the sweetness of it, but...
Commenting on Ecclesiastes 10:1-3
Dead flies cause the ointment of the apothecary to send forth a stinking savour,.... Such, as Jarchi observes, are in the winter season, which are weak and near to death, and get into precious ointment, prepared after the best manner, where they die, and corrupt and spoil it: or, "flies of deaths" (m); deadly ones, which have something in their nature poisonous and pernicious; which...
Ecc 10:1 The second half of the foregoing double proverb introduces what now follows: “Poisonous flies make to stink, make to ferment the oil of the preparer of ointment; heavier than wisdom, than honour, weighs a little folly.” We do not need to change מות זבוּבי, on account of the foll. sing.