expression
look at both sides of the shield; examine a matter from all angles
Proverb advising one to consider both sides of an issue before judging. The literal image is of a shield that has an inside and an outside.
人の意見を聞くときは、盾の両面を見よという言葉を思い出してください。
When listening to someone's opinion, remember the saying 'look at both sides of the shield.'
A proverb of uncertain origin; the shield metaphor suggests that one side may be polished and the other rough, so a fair judgment requires seeing both.