Is love incompatible with intelligence? Sarah Glass suspects this is the case. The shy, serious medical student would be the first to tell you that the heart is merely a muscle that beats or does not, the latter to the disadvantage of its owner. A heart cannot soar, leap, melt, or break. And this is why it's so bewildering when it happens to her. Half-way through med school, she decides to take "a month to live" away from hospitals,...