"Thinking as a Science" by Henry Hazlitt Though most famous for his work in economics, Hazlitt is able to tackle a multitude of topics thanks to the concepts of this book. Serving as an educational reference, Hazlitt makes the argument that thinking is nothing more than a science that can be honed and perfected to best reach one's objective, no matter what that may be. Meant to be read and reread, this book is still an essential text for those looking for help in self-actualization.