What is one main idea from the preamble section of the Declaration?

One main idea from the preamble section of the Declaration of Independence is the assertion of natural rights and the belief that all individuals are entitled to life, liberty, and the pursuit of happiness. It emphasizes the importance of government deriving its power from the consent of the governed and the right of the people to alter or abolish a government that becomes destructive to these fundamental rights. This section establishes the philosophical foundation for the colonies' decision to seek independence from British rule.