Definition
This idiom suggests that it is often wiser to be cautious and avoid unnecessary risks rather than being reckless, especially in dangerous situations.
When he saw the group of drunk men, he decided to take a detour, because he believed that 'discretion is the better part of valor'.
Faced with a heated argument, she chose to remain silent, knowing that 'discretion is the better part of valor'.
Although he wanted to retaliate, he decided not to engage, as he believed that 'discretion is the better part of valor'.