Instruct: Classify Amazon reviews into positive or negative sentiment
Query: well worth the purchase

whether it's your first experience with kant, or you're revisiting him upon reading an essay about him: this book is very useful. it highlights kant's vocabulary in alphabetical order with a little definition of each word. BUT,more importantly, it has references to WHERE the word gets used. and the dictionary spans his entire career. so, it's an excellent reference.the binding is a bit stiff.but, still, really useful.