Still waters run deep
Meaning
Quiet or reserved individuals often possess a profound and complex character that is not immediately apparent.
Origin
The deceptive tranquility of deep rivers, flowing silently beneath an unruffled surface, first inspired this ancient adage. While shallow streams gush and churn with boisterous noise, the profound depths move with a quiet, powerful grace. This keen observation was captured by the Roman historian Quintus Curtius Rufus, who noted that 'the deepest rivers flow with the least noise.' The proverb seamlessly flowed into the English lexicon by the 16th century, becoming a popular expression to describe individuals who, despite their calm exterior, possess an impressive depth of character and thought, much like the formidable currents hidden beneath still waters.
Examples
- Don't underestimate Sarah just because she's quiet; still waters run deep, and she has a brilliant mind.
- He rarely speaks in meetings, but I've learned that still waters run deep, and his contributions are always insightful when he does.