Graduation season reminds me of a conversation a professor friend of mine had with a student about to receive his diploma and look for his first job.
The professor said, "You're a bright guy, Jim, but you really need to improve your writing. And quickly."
"I don't need to worry about writing," Jim said. "I'm going into public relations."
"And what do you think you will be doing in public relations?"
Jim had a quick answer: "I'll be relating … to the public."
"No, you won't. You'll be grinding out press releases, and if you don't write them well you'll be out on your behind before you know it."
A bank executive told me he spends so much time correcting writing errors by his staff that it keeps him from doing critical things his job requires.
Some of the best advice I ever heard on writing well came from Marcus Quintilianus, a Roman who lived from 35 A.D. to 100 A.D.: