ying material (e.g. diagrams, symbols, etc.), was remarkable, & overall, resulted in some part of my mind 'exhaling', & my feeling a kind of gratitude seemingly reserved for the rare, magical educator whose talent 'lifts' us, & makes some previously inaccessible or otherwise 'cloudy' realm a new arena in which we can 'play'.I find myself struggling to convey just how remarkable this work (of true