Quantum Mantras is a review of and supplement to P.C.W. Davies' short book Quantum Mechanics. I taught from this book a number of times because Davies's expert and compact treatment of the subject allowed me to take my students all the way through transitions and selection rules in one semester. I can't imagine achieving this much with standard and more popular texts. I will periodically revise this document to include other topics, including recent developments in the persistent problem of quantum measurement. Download a copy (about 22 pages) by clicking on the link below.