not dwell on

His essay does not dwell on some of California’s huge and seemingly intractable challenges — homelessness, generational poverty in urban areas, the housing affordability crisis, the shocking toll rising temperatures are playing in so many parts of life.

His said his mum taught him and his two brothers to "raise our expectations", "never to be victims" and not dwell on misfortunes.

Earlier he had delivered a similar message to his devastated supporters, telling them: "Let us not dwell on the distance we have fallen short. Let us dwell on the distance we have travelled."

But Hertzberg did not dwell on such concerns.

Mr Deen added that Jeremiah liked football, exploring and adventuring, and that the family would not dwell on the sadness, but would "focus on how happy he made us in his life".