Definition
It is wiser to be cautious and avoid unnecessary risks in dangerous or difficult situations.
Faced with the angry protesters, he chose to retreat back into the building, as he felt that 'discretion is the better part of valor'.
Although she wanted to argue back, she knew that 'discretion is the better part of valor', so she remained silent.
When it comes to investing, don't be too aggressive; sometimes, 'discretion is the better part of valor'.