"Not the ones speaking the same language, but the ones sharing the same feeling understand each other." Rumi
It's one of the best sayings of Rumi, who is a 13th century Persian poet, theologian and Sufi mystic. His importance is considered to transcend national and ethnic borders. His poems have been widely translated into many of the world's languges.
This quote is about humanity and remind us that we don't need to speak the same language to communicate and love each other. If we feel the same pain or same happiness towards things, it means we understand each other.