What is the Goal & Purpose of Japanese Tea Ceremony

You might have heard that tea ceremonies are a way to train mentally, and learn manners and respect. But many people including the Japanese think that tea ceremonies are about drinking tea. How can you possibly train someone’s mind by drinking a cup of matcha? To be honest, the heart of tea ceremony can not be easily explained. Even the tea masters who have trained for decades and have dedicated their lives to it, will answer that they don't completely understand it, and they never will. However, there are some sayings left by tea legend 千利休 Sen no Rikyu, who completed the form of tea ceremony as we know of now.