Su Dongpo (also known as Su Shi), was one of China’s greatest poets and essayists. While in exile and gazing upon a full moon, he wrote a poem to describe how much he missed his brother. “We rejoice and grieve, gather and leave, while the moon waxes and wanes. Since times of old, nothing remains perfect,” he writes. “May our loved ones live long, beholding this beautiful scene together though thousands of miles apart.”

His poem carries themes found in the book of Ecclesiastes (1:1). The author, known as the Teacher, observed that there’s “a time to weep and a time to…