Creation Et All/Great Curse

From BluWiki

As the Primordials fell to the Chosen of the various Gods, they cursed their Exalted killers. The Curse was elaborate and vast, but its core is that the Exalted would forever be cursed with the hate, immoderation and treachery they'd shown in the murder of the Primordials. The Great Curse has dogged the Exalted since that day, but it settled most squarely on the shoulders of the Solar Exalted. Ever since, the Solars have been subject to terrible melancholy and violent emotional outbursts.