What is the preamble in the Declaration of Independence?

The Preamble of the United States is a quick, guiding statement that opens up the Constitution to its guiding principles.

"We the people, in order to form a more perfect union, establish justice ensure domestic tranquility. Provide for the common defense, promote the general welfare and ensure the blessings of liberty to ourselves and our prosperity do ordain and establish this constitution for the United States of America." (This is the Preamble itself.)