Rabbi Adin Steinsaltz writes:
The bad luck of the ant is not that it works so hard, but that it hasn’t the time or the intelligence to appreciate its work.
Man has the advantage of being able to give himself a day off or a week or even a month – not because doing nothing is important, but because he needs to stop and look around in order to understand where he is in the big picture and where he should be.
–Rabbi Adin Steinsaltz
from “Rest for the Weary Laborer” Aug. 16, 2006