If a bamboo tube makes a loud sound, it is empty.
More Filipino Proverbs:
A year's care, a minute's ruin.Filipino
Tell a lie and the truth will come to light.
Filipino
To a dog a bone has more value than a pearl.
Filipino
It is easy to be born, it is difficult to be a human being.
Filipino
The hardest person to wake up is the person who is already awake.
Filipino
A clear conscience is more valuable than wealth.
Filipino