The time to relax is when you don't have time for it.

Take rest; a field that has rested gives a bountiful crop.

Fatigue is the best pillow.

The best cure for the body is a quiet mind.
There is virtue in work and there is virtue in rest. Use both and overlook neither.
Rest when you're weary. Refresh and renew yourself, your body, your mind, your spirit. Then get back to work.
Without rest, a man cannot work; without work, the rest does not give you any benefit.
Your mind will answer most questions if you learn to relax and wait for the answer.
Fatigue makes cowards of us all.
It is not work that kills men; it is worry. Work is healthy; you can hardly put more on a man than he can bear. But worry is rust upon the blade.
It is not the mountain we conquer, but ourselves.
Sometimes the most productive thing you can do is relax.
Sometimes the most urgent and vital thing you can possibly do is take a complete rest.

He who fears to suffer, suffers from fear.
Man is so made that he can only find relaxation from one kind of labor by taking up another.