The lesson of the 2008 financial market collapse (and of the Titanic, for that matter) is that we should never be complacent about anything.

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Never become complacent with what you have accomplished in the past.

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The early 11.5% rally in 2012 was followed by an 11.2% decline, then the 15.8% gains ( see chart) made it clear that we should never be complacent.

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We can certainly never be complacent.

BBC: The full text of the Queen's Christmas broadcast.

Nvidia can never get complacent.

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MySpace, though clearly the dominant player, got complacent and never innovated.

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Another director would have plastered that metaphor all over the film, never missing a chance to point a finger at the audience as complacent consumers of violent imagery.

ECONOMIST: A flawless horror-thriller. Watch it if you dare