Tom Shakespeare on why - in today's world of uncertainty and fear - it may give us some political consolation to remember that while everything positive in life is short-lived, so too is everything negative.

He argues that believing that the best is behind us stops us making the most of present opportunities.

"To wallow in the past is to be sentimental, to seek an impossible return", he writes. "Our task is to create something different but equally fulfilling in future".

Producer: Adele Armstrong.