In moments of crisis, the leader called upon the better angels of someone's nature to guide their choices.

In moments of crisis, the better angels of somebody's nature often guide our most compassionate decisions.

In civic speeches, leaders often appeal to the better angels of one's nature to call for unity.

When he agreed to invest without checking the facts, it was a clear case of fools rush in where angels fear to tread, and his friends warned him about the risks.