500
Daily Double: The excerpt from President Washington's farewell address, "I anticipate with pleasing expectation that retreat, in which I promise myself to realize, without alloy, the sweet enjoyment of partaking, in the midst of my fellow Citizens, the benign influence of good Laws under a free Government--the ever favourite object of my heart, and the happy reward, as I trust, of our mutual cares, labours and dangers" is an example of this.
What is a primary source?