If Fortune calls, offer him a seat.
More Yiddish Proverbs:
If a link is broken, the whole chain breaks.
Yiddish
Health comes before making a livelihood.
Yiddish
May God protect you from goyishe hands and yiddishe tongues.
Yiddish
A person can study for seventy years and at the end die a fool.
Yiddish
Fear is worse than the ordeal itself.
Yiddish