The less you talk about it, the better.
If you make promises or state an opinion one day you will quickly become a hypocrite the next, so it is best to be evasive and mysterious.
Mystery, as anyone who has watched Lost will be able to tell you, keeps people going. Even if (much like lost) it's just to stall for time and make people think you're deep. And I'm deep, deep like a hole.
Damn straight (or not, as the case may be).