Cells exist inside and around us. The whole world is made up of tiny bricks that determine our actions, feelings, moods, and even intentions. And although at first glance cells are just building blocks for living organisms, they are actually independent and autonomous systems that not only produce and consume energy, but also communicate and adapt to the requirements of their environment. Cells make us love and hate, take care of ourselves and seek pleasure. Immortal cells in laboratories are endlessly dividing and transforming, and stem cells have potential we didn't even know we had. So if you haven't known anything about cells before, it's time to start getting to know them.