There are three wants which never can be satisfied: that of the rich, who wants something more; that of the sick, who wants something different; and that of the traveler, who says, Anywhere but here.
Source: The Conduct of Life, Considerations by the Way, 1860.
-- Ralph Waldo Emerson, (May 25 1803-1882), US philosopher, poet, essayist; He was the main spokesman of his time for moral optimism and belief in the individual: Self-Reliance, 1844.