"The Essentials of American Constitutional Law" by Francis Newton Thorpe is a scholarly treatise on constitutional law written in the early 20th century. This work provides a comprehensive analysis of the principles underlying American constitutional law, emphasizing the judgment of the courts and the roles of various governmental bodies in interpreting and applying the Constitution. The opening of the book lays out the foundational principle that the Constitution is the supreme law of the land, binding all governmental officials and deriving its authority from the sovereignty of "We the People." Thorpe discusses the complexities of judicial decisions, the significance of constitutional principles, and the relationship between state and federal powers. He emphasizes that understanding constitutional law requires not just recognition of its written provisions but also an appreciation for its practical applications and the historical context of its development. The prefatory remarks define the objectives of the text, setting the stage for an explorative dive into the complexities of legislative, executive, and judicial powers within the American legal framework. (This is an automatically generated summary.)