There is one common thing all the great people in history had: excessive usage of metaphores in conversation, or in front of the masses. Using the right metaphore engages human emotions almost instantly. This is not an easy task to learn and it takes a lot of practise, but once you train your mind to produce metaphors within seconds, you will be able to activate any kind of emotions inside people's heads. They change their minds, they do things you want them to do. It is almost like a hypnosis. By the way, the entire advertising industry is based on metaphores.