One swallow does not make a summer.
More Spanish Proverbs:
Ask not after a good man's pedigree.Spanish
The more riches a fool hath, the greater fool he is.
Spanish
Women, wind, and fortune, soon change.
Spanish
Marriage is a little bit like buying melons, you need a little luck.
Spanish
He who denies everything confesses everything.
Spanish
When you eat new bread, don't drink water.
Spanish