My grief is unbearable

"The great Persian king, Darius, was bemoaning to the noted Greek philosopher Democritus the loss of his wife. After more conventional means of appeasing the king failed, Democritus challenged the king to find three persons in the whole of his great kingdom who had never suffered from grief and to inscribe their names on to the tomb of his departed wife. This once done, he promised to bring his queen back to life. When Darius could not name three persons, Democritus thereafter laughed heartily at the great king for thinking that he alone suffered such grief and undeservedly so."