Einstein over verandering24 januari 2013/in Quotes/door Ger BothmerThere is nothing that is a more certain sign of insanity than doing the same thing over and over and expect the results te be different. http://www.bothmer.nl/nieuw/wp-content/uploads/2018/06/[email protected] 0 0 Ger Bothmer http://www.bothmer.nl/nieuw/wp-content/uploads/2018/06/[email protected] Ger Bothmer2013-01-24 22:07:372013-01-24 22:07:37Einstein over verandering