All his days [are] painful, his labor [brings] grief, and his heart cannot rest at night. This also [is] vanity!

The sleep of the laborer [is] pleasant, whether he eats little or much, but the wealth of the rich man does not allow him to rest.

He has neither seen nor known the sun, yet he has more rest than him.

Sow your seed in the morning, and do not let your hands rest in the evening, for you do not know what will prosper-- whether this or that, or whether both of them alike will succeed.