Management, business, leadership and investing quotes and many other famous quotes

If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.
Your purpose is to identify where in the process things go wrong, not who messed up. Look for systemic causes, not culprits.
The best is the enemy of the good.