Thanks to Pessoa, I open a volume on astrology. The author, already in the introduction, warns me: “If you don’t believe in the principles of what will be exposed in this work, then it will be of no use to you.” I gratefully close the volume and move on to the next. There is no doubt that astrology works: one just has to open a dating app. But, in short, a belief? Studying to confirm, to support a belief? Why not the opposite? Despite my efforts, the agreement with the poet does not seem to come. It is in dismay that I notice: the mosquito of belief has not bitten me.