Who is over nice, loses many a slice.
More German Proverbs:
Begged bread has a hard crust.German
He who has once invited the devil into his house, will never be rid of him.
German
It is a bad horse that does not earn his fodder.
German
Great men's vices are accounted sacred.
German
Every one basteth the fat hog, while the lean one burneth.
German
There is no off switch on a tiger.
German