Don't befriend a hot tempered man, and don't associate with one who harbors anger

Make no friendship with an angry man and with a furious man thou shalt not go

The breakdown in relations has been gradual and undramatic more a morose and resentful refusal to see each other s point of view than a succession of rows.

One reason for the widespread respect felt for Nelson Mandela is that years of imprisonment did not embitter him.

Instead, government officials are being warned that every document may potentially be leaked and published worldwide by a disgruntled junior officer.

Kennedy was only 46 when he was killed in Dallas by Lee Harvey Oswald, a disgruntled former Marine who had defected to the Soviet Union.

All that was necessary to challenge the world s mightiest power, after all, was a disgruntled US Army intelligence analyst, some hacking knowledge, a few computers, and a handful of determined activists enrolled under the contested banner of transparency.