expression
casting pearls before swine
Proverbial expression meaning giving something valuable to someone who cannot appreciate it. Often used when a gift or effort is wasted on an unappreciative recipient. Similar to 猫に小判.
See also: 猫に小判
彼に高級ワインをあげても豚に真珠だよ。
Giving him expensive wine is like casting pearls before swine.
子供にクラシック音楽を聴かせても豚に真珠かもしれない。
Playing classical music for children might be like casting pearls before swine.