'Anyone who cannot obey God's command to obey the Sabbath is a slave, even a self-imposed one. Your own heart, or our materialistic culture, or an exploitative organization, or all of the above, will be abusing you if you don't have the ability to be disciplined in your practice of the Sabbath. Sabbath is therefore a declaration of our freedom. It means you are not a slave - not to your culture's expectations, your family's hopes, your medical school's demands, not even to your own insecurities. It is important that you learn to speak this truth to yourself with a note of triumph - otherwise you will feel guilty for taking time off, or you will be unable to truly unplug.'
Timothy Keller, Every Good Endeavour, p.236.
