It is where our thoughts, personality, style, memories, etc. are kept. There are still many, many parts that make up the brain and the mind. After all the work and research that has been done, there is no doubt that the brain is the most interesting organ that humans have. He is able to guide us through almost every second of our lives. Even the smallest creature has a brain, and that brain is capable of supporting its life. It's amazing how compatible the brain is. We've only just begun to investigate how the brain works, and there's still a lot of work to do.