Although falling in love is perhaps the most intensely blissful experience anyone will have in a lifetime, this hasn’t worked to promote love as a way of life. Falling in love is temporary, and soon the real world returns, imposing all kinds of demands that seem impervious to love. Turning the other cheek doesn’t work in wartime. Feeling compassion for a mass murderer defies human nature. Loving someone who hates you hardly makes sense.