Understand that a great manager is essentially an organizational engineer. - Ray Dalio

When faced with the choice between two things you need that are seemingly at odds, go slowly to figure out how you can have as much of both as possible. There is almost always a good path that you just haven't figured out yet, so look for it until you find it rather than settle for the choice that is then apparent to you.

Encounters like these have taught me that human greatness and terribleness are not correlated with wealth or other conventional measures of success. I’ve also learned that judging people before really seeing things through their eyes stands in the way of understanding their circumstances — and that isn’t smart.

The most important thing is that you develop your own principles and ideally write them down, especially if you are working with others.