The Sons of Mary seldom bother, for they have inherited that good part; But the Sons of Martha favour their Mother of the careful soul and the troubled heart. And because she lost her temper once, and because she was rude to the Lord her Guest, Her Sons must wait upon Mary's Sons, world without end, reprieve, or rest. It is their care in all the ages to take the buffet and cushion the shock. It is their care that the gear engages; it is their care that the switches lock. It is their care that the wheels run truly;...