
In a time of rapid change, standing still is the most dangerous course of action.
Brian Tracy
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Inerte actie
Gepubliceerd in
Citaten
dec 26 2011
In a time of rapid change, standing still is the most dangerous course of action. Brian Tracy |
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If you think education is expensive, try ignorance. Derek Bok (president of Harvard University, 1971-1990) |
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Social learning en leren met sociale media |