mrt
01
2012
Nothing happens until something moves.
Albert Einstein
What, sir, would the people of the earth be without woman? They would be scarce, sir, almighty scarce.
Mark Twain
Beïnvloeden van gedrag De nieuwe wetenschap om verandering te leidenJoseph Grenny, Kerry Patterson, David Maxfield, Ron McMillan, Al Switzler
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