— 200th anniversary of the birth of Jean-Henri Fabre on 21 December 2023 — First all-encompassing biography of the entomologist — Biodiversity as a hot topic Jean-Henri Fabre (1823–1915) was a French teacher, scientist and researcher. At a time when insects were not among the preferred biological objects of study (and if they were, it was only for them to be collected, pinned and identified), Fabre began to conduct behavioural research on insects. This was not appreciated until very late in his life, so Fabre and his family were largely destitute most of the time. Stephan Krall provides a very personal account of this extraordinary and passionate researcher of insects, spiders and scorpions, who managed to publish scientific documents, complete his doctorate and write books on the side. Today he is considered as one of the founding fathers of the behavioural biology of insects.