Griffiths is second only to Jim Baggott in explaining QM without dropping the essential math.  But Griffiths goes a lot deeper.  I already have the Second Edition but couldn’t resist this update; at an age where re-reading books doesn’t seem like a great idea anymore this is one I’m looking forward to curling up with.<br><br>Griffiths’ rigorous treatments are clear and compelling but you don’t need a doctorate to read and enjoy.