This document provides an overview of key concepts in Chapter 1 of a textbook about law. It discusses the stages in the growth of law, the differences between common and positive law, and the origin of the US legal system from English common law. It also outlines the four sources of law - constitutions, statutes, case law, and administrative law. The document explains how conflicts between laws are resolved and compares criminal and civil laws as well as substantive and procedural law. Finally, it defines ethics and discusses civil disobedience in relation to ethical bases for laws.