Her brother decided to take the better part of valor himself.

He was going to kiss her, and she should use the better part of valor to move away.

Where was the better part of valor in that case?

This is not the better part of valor, he thought.

Sometimes, he said, discretion has been the better part of valor.

Sometimes the greater part of valor is being willing to give up a case to someone who can do better.

The better part of valor and all that, he decided.

He decided that the better part of valor was to stand there and see what happened next.

He decided discretion was the better part of valor and took off to the west.

To say the least, I figured it was time for the better part of valor.