Kevin Crossley-Holland

There are Arthurian legends in 14 or 15 medieval European languages. They are the product of no one time or place. On the contrary, in sum they represent a tremendous mine of human understanding, rather as the Bible does.

When I was a boy, I took over the shed at the bottom of the garden and displayed fossils and potsherds and coins in it and proudly called it my 'museum'. I charged people to come in, and my most prized possession was a Saracen shield dating from the Crusades.

Startups need to focus on building a foundation for their company culture early, and then they need to revisit it often. Every time a hire is made, a feature is launched, a Facebook status is updated, a press interview is given, a round of financing is raised, or a meeting is held, culture should be part of the decision-making process.

Mushrooms are miniature pharmaceutical factories, and of the thousands of mushroom species in nature, our ancestors and modern scientists have identified several dozen that have a unique combination of talents that improve our health.