The staircase in the Atlantis control room has a message written on the front. It reads as following from top to bottom.
We hold these as the truth: A hearty welcome to those of other worlds visiting our home for the first time. Welcome again to those returning. You have been gone too long and your absence has weighted heavily on out souls. We are whole again that you are among us and we celebrate you being here again. As we leave for distant worlds we pledge to respect the lands of our neighbors and to act with integrity as ambassadors in peace time of out people. Travelers with open hearts will always be welcome. Refugees from tyranny may seek shelter under out roof and know that out people will lay down their lives to protect the weak and the just. Let this be our pledge to those inhabitants of this world. And all we may ever know we will always strive to come in peace as we go in peace and you will be welcome on our shores forevermore.