Ecclesiastes 1:18

Revised Standard Version (RSV-CI)

For in much wisdom is much vexation, and he who increases knowledge increases sorrow.

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And he said to man, ‘Behold, the fear of the Lord, that is wisdom; and to depart from evil is understanding.’ ”

Then I said to myself, “What befalls the fool will befall me also; why then have I been so very wise?” And I said to myself that this also is vanity.

For all his days are full of pain, and his work is a vexation; even in the night his mind does not rest. This also is vanity.

Be not righteous overmuch, and do not make yourself overwise; why should you destroy yourself?