After eight years as President "I have only two regrets: that I have not shot Henry Clay or hanged John C. Calhoun."--1837--
Andrew Jackson (Calhoun was his Vice-President and Clay a former Secretary of State)
" With a 10% increase of brightness from our star, the Earth will no longer be within the habitable zone. This will mark the beginning of the evaporation of our oceans. By the time the sun stops burning hydrogen in its core, Mars will be in the habitable zone, and the Earth will be much too hot to maintain water on its surface."