His farewell letter has been so popular that it crashed the site it was posted on.

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Mason continued in his farewell letter to highlight some of the reasons the board gave him the boot.

FORBES: Groupon Fires Its CEO, Andrew Mason

Fortunately, his wife never did have to read his farewell letter, and Brugioni kept its contents a secret.

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The poets have been matched to collections at Cambridge University, which include objects such as Captain Scott's farewell letter to his wife and Charles Darwin's zoological specimens.

BBC: Carol Ann Duffy

Yes, look, I am sorry that I am upstaging the Goldman Sachs guy who resigned early on Wednesday and published a farewell letter in the New York Times.

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