Write down your goals

If people commit, orally or in writing, to an idea or goal, they are more likely to honor that commitment because of establishing that idea or goal as being congruent with their self image. Even if the original incentive or motivation is removed after they have already agreed, they will continue to honor the agreement.

- Robert Cialdini

Simple!

Figure out what something is worth and pay a lot less.

- Joel Greenblatt

Abandon at the wrong time

Investors repeatedly jump ship on a good strategy just because it hasn't worked so well lately, and, almost invariably, abandon it at precisely the wrong time.

- David Dreman

Time to sell

Successful stocks don't tell you when to sell. When you feel like bragging, it's probably time to sell.

- John Neff

Economic forecasts

I don't read economic forecasts. I don't read the funny papers.

- Warren Buffett

Long term asset?

Today people who hold cash equivalents feel comfortable. They shouldn't. They have opted for a terrible long-term asset, one that pays virtually nothing and is certain to depreciate in value.

- Warren Buffett (at the height of 2008 crisis)

Market behaviour

Be aware that the market does not turn when market participants begin to see light at the end of the tunnel. It turns when all looks black, but just a subtle shade less black than the day before.

- Jeremy Grantham

It doesn't change

Of the billionaires I have known, money just brings out the basic traits in them. If they were jerks before they had money, they are simply jerks with a billion dollars.

- Warren Buffett

Bubbles give back

Bubbles have always given back everything. There have been no exceptions, none.

- Jeremy Grantham

Required: Stomach

Everyone has the brainpower to make money in stocks. Not everyone has the stomach. If you are susceptible to selling everything in a panic, you ought to avoid stocks and stock mutual funds altogether.

- Peter Lynch