As annual letters to shareholders go, JPMorgan chief executive Jamie Dimon’s 2021 missive released last week was an epic. It was more than 60 pages long, covering everything from the pandemic, the pros and cons of Zoom and the challenges facing the banking sector, right through to America’s inequality challenge.

It’s a thoughtful and considered piece of writing that many business leaders can take something from. And if Dimon’s views on the challenges facing America and the West aren’t tempting enough, there’s also a fantastic section on his lessons from modern leadership.