It so happens that the Cardinal Archbishop of Cologne, Rainier Maria Woelki spoke about bicycles in a sermon in Cologne Cathedral on Sunday, June 11.
It was to mark the invention of the bicycle by German Baron Karl von Drais 200 years ago in 1817.
"Every time we get on a bicycle, we protect the environment. I wonder if Donald Trump uses one?" Woelki asked.
The cardinal deplored Donald Trump's decision to drop out of the Paris Climate Agreement.
The writer of this blog is cycling 63 years with the exception of an interval of two years while living in Rome, when the mode of transport was scooter, shanks mare, bus and tram.