Principles are ways of successfully dealing with reality to get what you want out of life.
Ray Dalio, one of the world’s most successful investors and entrepreneurs, cites principles as his key to success.
There are huge differences between memory-based book learning and hands-on, internalized learning. A medical student who has learned to perform an operation in a medical school class has not learned it in the same way as a doctor who has already conducted several operations. People who excel at book learning tend to call up from memory what they have learned in order to follow stored instructions. People who have internalized their learning use the thoughts flowing from their subconscious without thinking, in the same way they walk down the street. Understanding these differences is essential.