Did you know the oft repeated lines?
“Laugh, and the world laughs with you;
Weep, and you weep alone”
Are from the poem written by an American poet Ella Wheeler Wilcox.
On her way to the celebration, there was a young woman dressed in black sitting across the aisle from her. The woman was crying. Miss Wheeler sat next to her and sought to comfort her for the rest of the journey. When they arrived, the poet was so depressed that she could barely attend the scheduled festivities. As she looked at her own radiant face in the mirror, she suddenly recalled the sorrowful widow. It was at that moment that she wrote the opening lines of “Solitude” (Wikipedia)