Power of shared vision
There is a story that one day Shah Jahan wanted to know how the Taj Mahal was progressing. To find out he disguised himself as an old man and he went to the site by the Yamuna river. There he came across a stonecutter, whom he asked "What are you doing?" The stone cutter was annoyed by the disturbance and said, "Go away old man, don't you see that I'm busy?" The stonecutter's dedication impressed Shah Jahan.