I heard the following story from a friend today. Somebody once wanted to photograph the Rogatchover Gaon (horav Yosef Rosin) zt"l but was refusing to have his photo taken. Rabbi Meir Shapira zt"l, present at the time, turned to the Rogatchover and said: "When Yosef Hatzaddik was in Mitzrayim he was able to draw strength from visualising the image of his father Yaacov Avinu in his mind. Perhaps there will be someone who will see the image of a Tzaddik and having that image in