sept
11
2018
Solving problems is hard. Understanding their causes is harder.Eli Goldratt
Time is free, but it's priceless. You can't own it, but you can use it. You can't keepit, but you can spend it. Once you've lost ityou can never get it back.
Harvey MacKay
Het 3de (derde) alternatief Het principe van creatieve samenwerkingStephen R. Covey
Bij Managementboek