 Chevalley’s article is a precious source from a contemporary mathematician on the topic of style. He forcefully shows the difference between the late nineteenth century arithmetization of analysis and the early twentieth century axiomatic-algebraic approach. However, it has its limitations. The notion of style is not thematized as such and it is not clear that the features adduced to explain the particular historical events might provide the general tools for analyzing other transitions in mathematical style. But perhaps that should, if anything, be the task of a philosopher of mathematics (for a detailed analysis of Chevalley’s approach to style see Rabouin 2017; for further developments, focused on Bourbaki style, see Marquis 2021).