Proverb meaning that a person's eyes reveal their inner feelings or character.
目は心の窓と言うように、彼の目を見ると本当に優しい人だとわかる。
As the proverb says, 'the eyes are the windows to the soul' — looking into his eyes you can tell he's a kind person.
あの子はうそをつくと目が泳ぐ。まさに目は心の窓だ。
When that child lies his eyes dart about. Truly, the eyes are the windows to the soul.