The aim of this book is to provide a brief introduction to Marxism for those who are passionate about changing the world. It is written from an unabashedly partisan perspective and aims to demonstrate that Marxism can both make sense of this unjust and destructive world and can point to a solution - a workers' revolution which smashes the capitalist state and prepares the way for a society in which things are run for the needs of the many, not the profits of the few.