Today is Secretary of State Hillary Clinton's last day in Foggy Bottom. (And her first day out of office in more than twenty years.) Before signing off for good, she gave a speech to State Department employees. "I knew that there was something really special about this place," she said, adding: "I'm proud of the work we've done to elevate diplomacy and development, to serve the nation we all love, to understand the challenges, the threats, and the opportunities that the United States faces, and to work with all our heart and all our might, to make sure that America is secure, that our interests are promoted, and our values are respected." Watch the speech below:

As a formal procedure, she also handed in her letter of resignation to President Obama. It ends: "Thank you, Mr. President, for your friendship, and for the opportunity to serve in your Cabinet." Here's the letter: