A cardinal principle of Total Quality escapes too many managers: you cannot continuously improve interdependent systems and processes until you progressively perfect interdependent, interpersonal relationships.
My sons remember me most as a Cardinal. My one son is 26 years old, and I don't think he's ever seen me without a beard. It's not as black as it used to be, but it's still there.
If any sort of error is inexcusable, it's an incorrect phone number. One of the cardinal rules of copy editing is that every phone number published must be checked.
The cardinal rule for any performer is that they should know themselves before they enter the spotlight, and I didn't. I was just Neil and I did what I was supposed to do. I was supposed to get married, so I got married. I was supposed to get a job, so I looked for work.