One can have no smaller or greater mastery than mastery of oneself.
To know ten thousand things, know one well.
Intense interest in any subject is indispensable if you’re really going to excel in it.
It never ceases to amaze me to see how much territory can be grasped if one merely masters and consistently uses all the obvious and easily learned principles.
Practice is the price of mastery. Whatever you practice over and over again becomes a new habit of thought and performance.
All skills are learnable.
Find the heart of it. Make the complex simple, and you can achieve mastery.
Something will master and something will serve. Either you run the day or the day runs you; either you run the business or the business runs you.
You haven’t taught until they’ve learned.