The brain of a living creature, human consciousness... Despite all the scientific discoveries in this area, a great many mysteries remain, even when it comes to animals. And if we are talking about a person, the scope for further research is unimaginably large. Neurobiology is one of the youngest and fastest growing sciences. Over several decades, thanks to her, people began to understand how hormones and neurotransmitters work, to learn to regulate their state and mood with the help of simple body movements and thoughts. Even religious feelings, as it turns out, can be broken down into understandable details. This book is about the brain, mysterious but understandable, the brain of animals and humans, simple and complex, created by nature and man-made.