Rest is not idleness, and to lie sometimes on the grass under the trees on a summer`s day, listening to the murmur of water, or watching the clouds float across the sky, is by no means a waste of time
John Lubbock
It is not good for all our wishes to be filled; through sickness we recognize the value of health; through evil, the value of good; through hunger, the value of food; through exertion, the value of rest.
Dorothy Canfield Fisher
There is peace and rest and comfort in sorrow
Soren Kierkegaard
Source: thinkexist.com