After buying a farm, would a rational owner next order his real estate agent to start selling off pieces of it whenever a neighboring property was sold at a lower price? Or would you sell your house to whatever bidder was available at 9:31 on some morning merely because at 9:30 a similar house sold for less than it would have brought on the previous day?

— The Essays of Warren Buffett p. 103

After buying a farm, would a rational owner next order his real estate agent to start selling off pieces of it whenever a neighboring property was sold at a lower price? Or would you sell your house to whatever bidder was available at 9:31 on some morning merely because at 9:30 a similar house sold for less than it would have brought on the previous day?”

Try anger. Try resentment. Try jealousy. Envy. All these things are just one-way tickets to hell. And yet some people just wallow in them

Charlie Munger

You don’t have to be the Emperor of Japan to get fun out of rationality. You can avoid a lot of hopeless messes, you can help other people scramble out of their messes, you can be a very constructive citizen if you’re always rational. And being rational means you avoid certain things. It’s like, I don’t want to go where the standard result is awful.
Where is the standard result awful? Try anger. Try resentment. Try jealousy. Envy. All these things are just one-way tickets to hell. And yet some people just wallow in them. And of course it’s a total disaster for them and everyone around them.”

Pundits often speak of the psychology of markets, but in investing it is one’s own psychology that can be most dangerous and tenuous …

From Seth Klarman:

Fear of missing out, of course, is not fear at all but unbridled greed. The key is to hold your emotions in check with reason, something few are able to do. The markets are often a tease, falsely reinforcing one’s confidence as prices rise, and undermining it as they fall. Pundits often speak of the psychology of markets, but in investing it is one’s own psychology that can be most dangerous and tenuous.

If investors could know only one thing about greed and fear, they should know this: Over the 30-year period from 1984 to 2013, the Standard & Poor’s 500 Index returned an annualized 11.1%. Yet according to Ashvin Chhabra, head of Euclidean Capital and author of “The Aspirational Investor,” the average returns earned by investors in equity mutual funds over the same period was “a paltry 3.7% per year, about one-third of the index return.”

Bond fund investors fared even worse: while the Barclays Aggregate Bond Index returned an annualized 7.7%, investors in these funds “captured just 0.7% (not a misprint!) in annualized returns… That staggering underperformance is the cost that individual investors paid for following their instincts” by adding to and pulling money out of their funds at precisely the wrong times. In short, retail investors, in aggregate, substantially underperformed both the markets and the very funds in which they were invested.”

I don’t want to live the life of a Boxster,” he told the New York Times, “because when you get a Boxster you wish you had a 911, and you know what people who have 911s wish they had? They wish they had a Ferrari

Ariely, Dan (2009-06-06). Predictably Irrational

I don’t want to live the life of a Boxster,” he told the New York Times, “because when you get a Boxster you wish you had a 911, and you know what people who have 911s wish they had? They wish they had a Ferrari.”

We find it easy to spend $3,000 to upgrade to leather seats when we buy a new $25,000 car, but difficult to spend the same amount on a new leather sofa (even though we know we will spend more time at home on the sofa than in the car)

Ariely, Dan (2009-06-06). Predictably Irrational

We find it easy to spend $3,000 to upgrade to leather seats when we buy a new $25,000 car, but difficult to spend the same amount on a new leather sofa (even though we know we will spend more time at home on the sofa than in the car).

As H. L. Mencken, the twentieth-century journalist, satirist, social critic, cynic, and freethinker noted, a man’s satisfaction with his salary depends on (are you ready for this?) whether he makes more than his wife’s sister’s husband. Why the wife’s sister’s husband? Because (and I have a feeling that Mencken’s wife kept him fully informed of her sister’s husband’s salary) this is a comparison that is salient and readily available

Ariely, Dan (2009-06-06). Predictably Irrational

As H. L. Mencken, the twentieth-century journalist, satirist, social critic, cynic, and freethinker noted, a man’s satisfaction with his salary depends on (are you ready for this?) whether he makes more than his wife’s sister’s husband. Why the wife’s sister’s husband? Because (and I have a feeling that Mencken’s wife kept him fully informed of her sister’s husband’s salary) this is a comparison that is salient and readily available.”