Warning: The magic method Tribe__Extension_Loader::__wakeup() must have public visibility in /home/clients/415678deedea8ef73a257590656d6552/v2.philoma.org/wp-content/plugins/the-events-calendar/common/src/Tribe/Extension_Loader.php on line 157 Arts of the wise leader - Paper presented by Mark Strom & Laurent Ledoux at the European SPES Forum in 2010 | Philosophie et Management