The mind is a strange instrument. You can't only think with it. You can also run with it. Or rather, you can train your muscles with it. The mini-essays in this book are about what you can do with your mind and what your mind does with you; how the mind makes who you are and what you do; and also how other factors determine you and your actions. The book addresses a variety of themes such as the influence of the unconscious, free will, your identity, and responsibility.