“Why is there evil in the world? Listen carefully. There is a mother who is embroidering. Her son sitting on a low stool sees her work, but upside down. He sees the knots of the embroidery; the tangled threads, and says: "Mother, what are you doing? Your work is not at all clear?"
Then the mother lowers the embroidery frame and shows the right side of her work. Each colour is in its place and the variety of threads form a harmonious design.
So, we are seeing the reverse side of the embroidery. We are sitting on the low stool.  St. Pio of Pietrelcina