The Journal of Information Science does not normally carry book reviews, but when the Editor received a copy of Martin Frické’s book, Logic and the Organization of Knowledge, he thought it was too interesting to ignore. It succinctly encapsulates years of accumulated research and practice in the field, while also adding ‘logic’ into the mix. He asked me if I could think of a suitable way of acknowledging the work, and I proposed a collection of short pieces by prominent people in the information science community. This is not, then, a review; more a salute to the author for making explicit the fundamental relationship between the ancient disciplines of logic and knowledge organization.