Always be on guard, always think, and continuously check to see if reality confirms your assumptions and conclusions.
Eliyahu M. Goldratt
dec
10
2018
Always be on guard, always think, and continuously check to see if reality confirms your assumptions and conclusions.
Eliyahu M. Goldratt
Vroeger was ik een twijfelaar, ik ben daar nu niet meer zo zeker van. Herman Finkers |
De Bullet Journal Methode Bij Bol.com | Managementboek
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