Manolo says, here is the Manolo’s latest colimn for the Express of the Washington Post. Dear Manolo, Unfortunately, my summer is almost over. Soon, it will be time for me to go back to standing at the blackboard several hours each day, teaching math to high school students. Can you recommend some affordable, comfortable shoes that might match my style? I consider myself to be a moderately hip, somewhat quirky thirty-year old. Charise Manolo says, ah, how well the Manolo remembers his own algebra teacher, Sister Benedicta, otherwise know to the children as “The Slide Rule”, not simply for her…