Monument to certainty

This is the Monument, built between 1671 and 1677 to commemorate the Great Fire of London.


Climb the 311 steps to the viewing platform – as I did on Tuesday – and as well as the nice views you get a certificate. But the Monument is more than just a memorial to the fire. It was built by Christopher Wren and Robert Hooke – members of the Royal Society.


This is Hooke in a modern painting by Rita Greer. He deduced the wave theory of light and the law of elasticity – which is named after him. He was...