Barbara

What percentage of history's greatest and most prolific writers did not use a Zettelkasten? More than 99%, probably. Luhmann is an exception that proves the rule.

We can't build a sustainable business by chasing every opportunity.

A sustainable business is strategically constrained. Its leaders know what the business is and, more importantly, what it's not.

When someone responds in a way you didn’t expect, ask them, “What did you hear me say?” Most of the time, the other person heard something incorrect. Follow up with “I’m glad I asked; let me try that again.”