Before you start up a ladder, count the rungs.
More Jewish Proverbs:
The best horse needs a whip, intelligent men need advice, and devout women need a man.
Jewish
The rich man doesn't pay, the debtor does.
Jewish
By the first glass a lamb, the second a lion, and the third a pig.
Jewish
With time, even a bear can learn to dance.
Jewish
Better the best of the worst than the worst of the best.
Jewish