How much are you supposed to like what you do? Unless you know that, you don't know when to stop searching. And if, like most people, you underestimate it, you'll tend to stop searching too early. You'll end up doing something chosen for you by your parents, or the desire to make money, or prestige-- or sheer inertia.

Here's an upper bound: Do what you love doesn't mean, do what you would like to do most this second. Even Einstein probably had moments when he wanted to have a cup of coffee, but told himself he ought to finish what he was working on first.

It used to perplex me when I read about people who liked what they did so much that there was nothing they'd rather do. There didn't seem to be any sort of work I liked that much. If I had a choice of (a) spending the next hour working on something or (b) be teleported to Rome and spend the next hour wandering about, was there any sort of work I'd prefer? Honestly, no.

But the fact is, almost anyone would rather, at any given moment, float about in the Carribbean, or have sex, or eat some delicious food, than work on hard problems. The rule about doing what you love assumes a certain length of time. It doesn't mean, do what will make you happiest this second, but what will make you happiest over some longer period, like a week or a month.

Unproductive pleasures pall eventually. After a while you get tired of lying on the beach. If you want to stay happy, you have to do something.

As a lower bound, you have to like your work more than any unproductive pleasure. You have to like what you do enough that the concept of "spare time" seems mistaken. Which is not to say you have to spend all your time working. You can only work so much before you get tired and start to screw up. Then you want to do something else-- even something mindless. But you don't regard this time as the prize and the time you spend working as the pain you endure to earn it.

I put the lower bound there for practical reasons. If your work is not your favorite thing to do, you'll have terrible problems with procrastination. You'll have to force yourself to work, and when you resort to that the results are distinctly inferior.

To be happy I think you have to be doing something you not only enjoy, but admire. You have to be able to say, at the end, wow, that's pretty cool. This doesn't mean you have to make something. If you learn how to hang glide, or to speak a foreign language fluently, that will be enough to make you say, for a while at least, wow, that's pretty cool. What there has to be is a test.

So one thing that falls just short of the standard, I think, is reading books. Except for some books in math and the hard sciences, there's no test of how well you've read a book, and that's why merely reading books doesn't quite feel like work. You have to do something with what you've read to feel productive.

I think the best test is one Gino Lee taught me: to try to do things that would make your friends say wow. But it probably wouldn't start to work properly till about age 22, because most people haven't had a big enough sample to pick friends from before then.

Dear Sir,

I am James Shen from a diesel fuel injection parts Plant, hope we can help you in the line of military use diesel fuel engine parts.

With more than 20 years experience in this field, our factory is producing the parts: HD90101A and HD8821. They are used in the engine system of M35A2 and M60 tank. Their most competitive price (almost one tenth of the product which made in USA) and the same quality will meet your need fairly.

We are one of ADS members. Our products have a good reputation with sound quality and competitive price in European market, South American market and other countries.

If you feel interested in our products, please let us know any time. We are always within your touch.

Thanks and best regards,

James Shen

BEIRUT, Lebanon - The controversy over Danish caricatures of Prophet Muhammad escalated Monday as gunmen seized an EU office in Gaza and Muslims appealed for a trade boycott of Danish products. Denmark called for its citizens in the Middle East to exercise vigilance.

Denmark-based Arla Foods, which has been the target of a widespread boycott in the Middle East, reported that two of its employees in Saudi Arabia were beaten by angry customers. Aid groups, meanwhile, pulled workers out of Gaza, citing the threat of hostilities.

The 12 drawings — published in a Danish paper in September and in a Norwegian paper this month — included an image of the prophet wearing a turban shaped as a bomb with a burning fuse. Islamic tradition bars any depiction of the prophet, even respectful ones, out of concern that such images could lead to idolatry.

Danish government officials have expressed regret over the furor but have refused to get involved, citing freedom of expression. The Jyllands-Posten newspaper has refused to apologize for publishing the drawings and has said it did not mean to insult Islam.