for, in abundance of wisdom is abundance of sadness, and he who addeth knowledge addeth pain.'

For all his days his work is painful and sorrowful; even at night his mind does not rest. This too is vanity (worthless).

All his days are in the dark, and he has much sorrow, pain, disease, and trouble.

He removing stones; shall suffer pain by them; and he cleaving woods asunder shall be endangered by them.

Banish anxiety from your heart, and put away pain from your body, for youth and vigor [are] vanity.