Lecture given at the Frontiers of Fundamental Physics 15 Conference held at Miguel Hernández University, Elche, Spain on 29 Nov. 2017, arguing that at the most fundamental level nature, characterised in biosemiotic terms, is essentially biological.

Lecture at the Stiftung der Deutschen Wirtschaft symposium on Science and Society, Cambridge, February 2013, in which the difficulties faced by advances running counter to the views prevailing in the scientific community were discussed.