My favorites were:
No one has a clue how to market anything. We are all winging it. It's just that some are better at winging it than others.I really couldn't agree more. Winging it better comes with having more experience. Being a good marketer is all about trying and learning from failure. Can't bear to fail? Then marketing isn't your cup of tea.
That which you doubt becomes a trend. When I started, I hedged my bets that this internet thing was a fad by writing copy for print pieces, too. Cough.
Again, I've dismissed Twitter as what he described in point 4 - farts in the wind. Obviously, I was wrong, but so is almost everyone, most of the time.
Marketing is really, really, really messy. It's like painting your cat in peanut butter and then tying a bell to its tail. Stuff gets everywhere. That's OK.
I'd add to that cat analogy a massive ego and a shape warping mirror. It can get darn right messy.
Have some fun, and a sense of humor. As a marketer, ridiculous things will happen to you every day. You're going to have to roll with it.
A sense of humor is absolutely required! Otherwise, you'll lose your mind.