Too much work,
the British used to say,
makes Jack a dull boy.
But it’s worse than that.
It numbs Jack, parches Jack,
hardens Jack. It kills his heart….
Busyness kills the heart.
– Mark Buchanan in The Rest of God
Brian J. Mikul 
I really liked Mark Buchanan’s book The Rest of God and reviewed it on my blog a while ago.