Any performer tries to perform music as if for the first time, with all that energy and excitement that comes from discovering a new piece--maybe trying to recreate the memory of falling in love with a piece when hearing it first as a child--and just as people regularly say of a brilliant conductor that they seem to conduct as if recreating the energy an audience must have felt when the piece was first played decades, even centuries, before, so too I think we need to communicate our knowledge with the passion we first encountered as children.