discretion is the better part of valour
It is often wise to refrain from seemingly brave, but dangerous, speech or action.
The better part of valour is discretion; in the which better part, I have saved my life.
noun
The quality of being discreet.
Bob showed great discretion despite his knowledge of the affair.
The ability to make wise choices or decisions.
With regard to a woman, at nine years of age, she was, if married, considered entitled to her dower; at twelve, she may consent to marriage; at fourteen, she is at years of discretion, and may choose a guardian; […]
The freedom to make one's own judgements.
I leave that to your discretion.
The freedom to make one's own judgements.
The police came and searched us at their discretion because we were shouting at each other's faces.