 Complete the following phrase:  In 2004, the Methuselah Foundation began a donor initiative called The Methuselah 300 The 300, a community of philanthropic donors pledging 25,000 over 25 years, at a minimum of 1,000 annually, toward the organization. The initiative was named after the 300 Spartans who held the pass at Thermopylae in 480 BC during the 