This is a groundbreaking book for humanity. Like a captivating story with epic character development, this nonfiction makes us feel and think, by taking us on a compelling, original, and unpredictable journey through a treasure trove of humanity. This would be an absolutely unforgettable gift for your friends as it is always relevant to their current needs. It would drastically improve their life regardless of their current situation. Their life will be changed before they finish reading the first three chapters. Their relationships with you and others will be improved before they reach the seventh chapter. They would open this book, this gift again and again. No matter how often they read it, there are always something new to be discovered. Thumos is a big concept. Its origin can be traced back to a specific time and place. It began in Richardson, Texas, near Custer Park, few weeks before the September 11 attacks. The original idea was not further developed until fifteen years later, by one of the most unlikely pairs of co-writers in a town 1800 miles away. In the last chapter, they wrote: “Legacy is what you do that impacts later generations.” With the potential for the greatest impact in the least number of words, their ten chapters might turn out to be, how dare to say it now, the finest legacy of the 21st century. In that case, Thumos would be the word that changes the world. Thumos is onboarding for humanity. Onboarding is the mechanism through which new members of an organization acquire the necessary knowledge, skills, and behaviors to become effective organizational insiders. When the organization is humanity as a whole, its onboarding process is spelled out by this book. Thumos is a necessary book for every member of our humanity. It is an imperative book for leaders, managers, and teachers. Thumos is indispensable for every student as it, without resorting to gimmickry, gives a direct, practical, and cogent answer to the most basic questions in life, for example, on adulthood, love, and collaboration. This brand-new knowledge is especially necessary for those in pursuit of Emotional Prosperity and Lifespan Productivity™, i.e. for those who value the potential abundance of desirable emotions in life as well as how big the difference we could make for the world. Because neither autonomy, which means freedom of direction, nor self-sufficiency, which means aid-less survival, could bring about adulthood; independence, which means self-sufficient autonomy, could not either. “Moving up in life does not make us adults. Graduating at the end of primary or secondary school, or even university does not make us adults. Having a job does not make us adults. Self-sufficiency does not make us adults. Marriage does not make us adults, especially in an arranged marriage. Having a child does not make us adults. Many children do not become adults when they give birth and have their first child, especially with a teenage pregnancy. Age does not make us adults.” This book shows us what it takes to become a true, proper adult. This book gives us “a direct, practical, and cogent answer to the following questions without resorting to gimmickry: what is love? What is it made of; how does it work; is there an expected outcome; how do we discharge the power of love; who does or does not love me; who do I love?” “The totality of your perspectives and beliefs is your paradigm. It is your gestalt of concepts, each of which is a mental formulation for use on a broad scale. It evolves over time as it is slowly influenced by outside perspectives that are provided by other people, which at first includes your parents, then books and your society at large. When the influence takes place quickly, it causes a radical change to your paradigm and makes you have a paradigm shift. This will happen to you when you read” this book, a truly groundbreaking gift for humanity.