My definition of an expert in any field is a person who knows enough about what’s really going on to be scared.
P. J. Plauger
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16
2014
My definition of an expert in any field is a person who knows enough about what’s really going on to be scared.
P. J. Plauger
If you always do what you always did, |
De kracht van het piramideprincipe Bij Bol.com of Managementboek |