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Omdenken volgens Dale Carnegie

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It isn’t what you have, or who you are, or where you are, or what you are doing that makes you happy or unhappy. It is what you think about.

Dale Carnegie

Laatst aangepast op woensdag, 04 september 2013 19:39  

People demand freedom of speech to make up for the freedom of thought which they avoid.

Sören Kierkegaard 

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