Years ago, I lived in a building in a large city. The building next door was only a few feet away from mine. There was a woman who lived there, whom I had never met, yet I could see her seated by her window each afternoon, sewing or reading.

After several months had gone by, I began to notice that her window was dirty. Everything was unclear through the dirty window .I would say to myself, “I wonder why that woman doesn’t wash her window .It really looks terrible.”