美文晨读
Don't be afraid of killing yourself with overwork. It is beyond your power to do that on the sunny side of thirty. They die sometimes, but it is because they quit work at six in the evening, and do not go home until two in the morning. It’s the interval that kills, my son. The work gives you an appetite for your meals; it lends solidity to your slumbers, it gives you a perfect and grateful appreciation of a holiday.