The Declaration of Independence

In what ways is the Declaration of Independence a timeless document, and in what ways is it a product of a specific time and place? Is it primarily a historical document, or is it relevant to the modern era?

How does the Declaration of Independence define a tyrant? And how convincing is the argument the signers make that George III was a tyrant?

The Declaration of Independence does not establish any laws for the United States. But how do its ideas influence the Constitution or other documents that do establish laws?