The book "The Grammar of Free Thought" written by Cohen and Chapman is an important work in the field of philosophy and sociology. In this book, the authors consider the issues of faith and doubt, free will and natural laws, ethics and morality, as well as many other aspects related to the worldview of the modern intellectual. With the help of logical proofs and arguments that can be traced throughout the book, the authors encourage the reader to think about the essence of faith and worldview in the modern world. "The Grammar of Free Thinking" is an invitation to think and discuss complex issues that affect modern society.