The historical document known for stating "We hold these truths to be self-evident" is the Declaration of Independence, which was adopted on July 4, 1776. This document was drafted by Thomas Jefferson and outlines the thirteen American colonies' reasons for breaking free from British rule. The phrase is part of a preamble that articulates fundamental principles of individual rights, emphasizing that certain truths, such as the right to life, liberty, and the pursuit of happiness, are inherent and do not require justification. The Declaration served as a foundational text in establishing American democracy and has inspired numerous movements for freedom and equality worldwide.