The signature of mediocrity is not an unwillingness to change. The signature of mediocrity is inconsistency.

For no matter what we achieve, if we don't spend the vast majority of our time with people we love and respect, we cannot possibly have a great life. But if we spend the vast majority of our time with people we love and respect - people we really enjoy being on the bus with and who will never disappoint us - then we will almost certainly have a great life, no matter where the bus goes. The people we interviewed from the good-to-great companies clearly loved what they did, largely because they loved who they did it with.

The difference between a good leader and a great leader is humility.

Our findings do not represent a quick fix, or the next fashion statement in a long string of management fads, or the next buzzword of the day, or a new 'program' to introduce. No! The only way to make any company visionary is through a long-term commitment to an eternal process of building the organization to preserve the core and stimulate progress.

The best CEOs in our research display tremendous ambition for their company combined with the stoic will to do whatever it takes, no matter how brutal (within the bounds of the company's core values), to make the company great. Yet at the same time they display a remarkable humility about themselves, ascribing much of their own success to luck, discipline and preparation rather than personal genius.

A company should limit its growth based on its ability to attract enough of the right people.

Greatest danger is not failure, but be successful and not know why.