The grass is not, in fact, always greener on the other side of the fence. Fences have nothing to do with it. The grass is greenest where it is watered. When crossing over fences, carry water with you and tend the grass wherever you may be.

Robert Fulghum (1937-), It Was on Fire When I Lay Down on It, cited in http://www.quotationspage.com/mqotd/2008-01-04.html