While everyone would love to have that perfect portfolio of stocks that can be bought and held forever, it usually does not work out that way. Markets, technology, and businesses change too quickly to put portfolios on autopilot.

Mueller is the leading North American provider of water infrastructure and flow control products - things such as fire hydrants, valves, pipes, fittings, and couplings. While this is no doubt a mundane business, it is also an excellent one.

When reviewing one's portfolio, it is important to be aware of common mental mistakes that may lead to bad decisions. The most powerful is commitment bias, which, as manifested in investing, is the tendency to fall in love with one's stocks.

Parents are, of course, most important in shaping their children's lives, but teachers are critically important as well. Who among us doesn't look back on a few great teachers who inspired us, opened up new worlds, and helped make us who we are?

Most chief executives rise to that position by being good operating managers. Few have extensive experience or training with capital allocation. What CEO wants to return excess cash to shareholders when it could be used to expand his or her empire?

Nirvana, to a value investor, is paying a cheap price for a company that is growing in value every year at a nice rate - this largely explains why today we own stocks like Berkshire Hathaway, McDonald's, Wal-Mart, Microsoft, Costco and Anheuser-Busch.

Dealing with uncertainty is always a key challenge for investors. But dealing with uncertainty doesn't mean avoiding it - on the contrary, it is often fuzziness about a company's future that creates the type of opportunity bargain-hunting investors cherish.

The exact details of how you practice value investing will vary investor to investor, but the fundamental principle of scouring the world, looking for dollar bills that you can buy for 50 cents or at some big discount - that is universal to value investing.

When high-growth companies slow down, growth and momentum junkies often sell indiscriminately, which can create great opportunities for value investors. Just be careful not to anchor on the stock's previous price or earnings multiple, which are no longer relevant.

One can't be a successful investor without a healthy dose of confidence. To commit your own and others' hard-earned capital requires conviction, and conviction requires confidence. But as with fine brandy or coffee ice cream, too much of a good thing can be problematic.

I'd say the general outline of a sound investment approach is, first of all, you have to decide are you going to try to be an investor yourself? The answer for most people is probably they shouldn't try. You should put your money in index funds and not try to be a stock picker.

When it comes to owning stocks of the best-known businesses in the world, value investors usually feel like children looking through the window of the candy store, unable to afford the treats inside because they refuse to pay the prices such high-quality franchises typically bear.

If I bring to light a company that's poisoning customers, defrauding investors, or something like that... there just aren't enough regulators in the world to keep up with all of the fraud and malfeasance that goes on out there, particularly in the little nooks and crannies of the market.

While there's always plenty of room for improvement, our government is actually quite effective and efficient. Our military and judicial systems and national parks are the best in the world. Unlike in countries where government corruption is rampant, I've never once been solicited for a bribe.

One of the best places to look for value is what I call 'babies thrown out with the bathwater' - in other words, scour the most out-of-favour sectors for good companies whose stocks have been crushed due to overblown concerns about the industry that do not, in fact, have an impact on the company.

While I take no pleasure in others' misfortunes, we've historically made most of our profits from other investors behaving in a panicked and irrational fashion and selling us certain stocks at prices far below their intrinsic value. More volatility equals cheaper stocks, which equals higher returns.

Investing is a probabilistic business. Every once in a while, it's sort of like you're throwing six-sided dice, and anything except a one or a two, you're doing well. Statistically speaking, you throw the dice enough times, you're going to throw a one or a two five times in a row, and you're going to look pretty foolish, right?

There is a natural tendency for investors to devote a significant majority of their time to finding new ideas. After all, uncovering great companies selling at great prices is the lifeblood of successful investing. But in the never-ending quest for the next great idea, investors often give short shrift to their existing investments.

No one would suggest completely ignoring news about your investments. Enron investors, for example, would have been well served to sell once early reports of accounting irregularities surfaced. But the key is to keep news in context and act only if further reflection or study indicates that the core thesis for an investment has changed.

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