Empty vessels make more noise than full vessels when struck. This proverb refers not just to physical vessels, but also to people. Empty vessels represent empty-headed and talkative people who speak continuously without meaning or action. Their speeches are boastful but they cannot back up their words with deeds. Full vessels correspond to people who talk less but accomplish more. Their words are meaningful and serious because they do what they say. Serious people let their actions demonstrate their knowledge and abilities rather than boasting about them with empty words.