Aubrey died in 1697, leaving his notes in chaos and prehistory in the hands of a small number of varyingly eccentric specialists

John Aubrey, the first person to make a serious study of stone circles, put his finger on the problem: ‘These Antiquities are so exceeding old that no Bookes doe reach them.’ He developed a more effective method. Using measurements and comparative surveys of different circles with notes ‘writt upon the spott’, he was able to work out that megalithic monuments were of distinct types and that they predated the Romans, Saxons and Danes. He thus, almost single-handedly, created the concept of prehistory and invented field archaeology.

John Aubrey tells us that Hobbes ‘always carried a note booke in his pocket, and as soon as a thought darted, he presently entred it into his booke, or otherwise he might have lost it. He had drawn the designe of the book into chapters, etc., so he knew whereabout it would come in.’