Most people who fall obsessively in love claim that it happens precipitously, unexpectedly [...] But I believe there's almost always a prerequisite. Falling in love in this way will usually occur at a time of transition. We may not be conscious of it, but something has ended and something new must begin. Romantic obsession is like a cataclysm breaking up the empty landscape. Like a strange exotic plant, it grows in arid soil. (pp. 27-28)