It is rest, not a vacation, that is a biological need.

The wise rest at least as hard as they work.

When you truly love what you do, not working is hard work.

The most fruitful breaks are often those we are or were forced to take by life.

A restless mind makes a problem of a resting body.

Being tired is pleasant when you think what has tired you was worth the portion of your life.

It helps to sometimes take a break by resting on your laurels.

Through drowsiness, your body is telling you that you need to rest. By drinking a caffeinated drink, you are telling it to go to hell.

After some point, working harder makes achieving the goal harder or even impossible.