I never met the late Mark Colvin in person but, like many people, I had a number of conversations with him on Twitter over the years. A wonderfully knowledgable and witty person who is being missed by so many people today.

Of all the exchanges we had, this short and whimsical one from 2011 is my favourite, as he comes to the aid of a troubled writer in my moment of distress: (Sadly the link in the final tweet no longer works)