Brunschvicg examined Bachelard’s doctoral thesis. Canguilhem was one of Bachelard’s own students, taught with him, and succeeded him at the Sorbonne. Bachelard was briefly involved in a journal with Caillois (both interested in spaciality). He contributed articles to Koyré’s philosophical journal, and joined its editorial board. He was a significant influence upon the thought of others including Canguilhem, Hyppolite, Foucault and Bourdieu, and was himself deeply influenced by his friend Cavaillès’ commitment to a particular idea about epistemology. He taught Serres, and was interviewed by his disciple Tournier.