In a crisis, stocks of financial companies are great investments, because the tide is bound to turn. Massive losses on bad loans and soured investments are irrelevant to value; improving trends and future prospects are what matter, regardless of whether profits will have to be used to cover loan losses and equity shortfalls for years to come.

In a world in which most investors appear interested in figuring out how to make money every second and chase the idea du jour, there's also something validating about the message that it's okay to do nothing and wait for opportunities to present themselves or to pay off. That's lonely and contrary a lot of the time, but reminding yourself that that's what it takes is quite helpful.

The overwhelming majority of people are comfortable with consensus, but successful investors tend to have a contrarian bent.

Investors frequently benefit from making decisions with less than perfect knowledge and are well rewarded for bearing the risk of uncertainty. The time other investors spend delving into the last unanswered detail may cost them the chance to buy into situations at prices so low they offer a margin of safety despite the incomplete information

Investing is the intersection of economics and psychology. The analysis is actually the easy part. The economics, the valuation of the business isn't that hard. The psychology - how much do you buy, do you buy it at this price, do you wait for a lower price, what do you do when it looks like the world might end - those things are harder. Knowing whether you stand there, buy more, or whether something has legitimately gone wrong and you need to sell, those are harder things. That you learn with experience, by having the right psychological makeup.

Don't short many stocks. Instead they hedge for tail risk with CDS and options. They are happy to incur illiquidity

The trick of successful investors is to sell when they want to, not when they have to.