There is no day without its night.
More Portuguese Proverbs:
The ass does not know the value of his tail till he has lost it.Portuguese
It is approved alchemy to have an income and spend nothing.
Portuguese
Under fair words beware of fraud.
Portuguese
Who holds his peace and gathers stones, will find a time to throw them.
Portuguese
He that will, does more that he that can.
Portuguese
A good cock was never fat.
Portuguese