“Zen is the study of making the mind still. As your mind becomes still, a power enters into you. This power transforms your mind. It escalates your evolution and you begin to cycle through many incarnations in one lifetime. You make tremendous quantum leaps and jumps… you are going to take perhaps a hundred lifetimes, which you would have gone through and experienced and gradually evolved through into higher levels of intelligence, and do that perhaps in one lifetime. And you will go through all the changes in awareness, all of the different states of mind, that you would have experienced in a hundred lifetimes.” Rama - Dr. Frederick Lenz
Rapid Mental Development is talk 14 of 18 in the Zen Tapes series.