Value investing is at its core the marriage of a contrarian streak and a calculator.

Over the long run, the crowd is always wrong.

It's awful to have a depression, but it's a great thing to have a depression mentality because it means that we are not speculating, we are not living beyond our means, we don't quit our job to take a big risk because we know we might not get another job. There is something stable about a country, a society built on those values.

All an investor can do is follow a consistently disciplined and rigorous approach; over time the returns will come

It's incredibly important to note that when you don't allow failure, you get more failure.

Beware leverage in all its forms. Borrowers - individual, corporate, or government - should always match fund their liabilities against the duration of their assets. Borrowers must always remember that capital markets can be extremely fickle, and that it is never safe to assume a maturing loan can be rolled over. Even if you are unleveraged, the leverage employed by others can drive dramatic price and valuation swings; sudden unavailability of leverage in the economy may trigger an economic downturn.

Complexity - limits competition.