This document discusses the nature and limitations of taxation. It notes that taxation is an inherent power of government that is exercised legislatively, subject to constitutional and inherent limitations. Some key limitations are that taxes can only be levied for public purposes, only on persons and properties within a government's jurisdiction, and the legislative power to tax cannot be delegated without express permission. The document also outlines various constitutional limitations on taxation related to due process, uniformity, presidential veto power, and exemptions for religious/charitable entities. Finally, it discusses the theory of taxation being based on reciprocal duties of government protection and support of the people in exchange for public funding through taxes.