You may keep yourself safe from fire, but not from a bad man.
More Portuguese Proverbs:
A goose, a woman, and a goat, are bad things lean.Portuguese
A fast horse does not want the spur.
Portuguese
An old man in love is like a flower in winter.
Portuguese
Pray to the saint until you have passed the slough.
Portuguese
The wolf is well pleased with the kick of a sheep.
Portuguese
The pot that boils too much loses its flavour.
Portuguese