Ecclesiastes 1:17–18

³I sought in mine heart to give myself unto wine, yet acquainting mine heart with wisdom; and to lay hold on folly, till I might see what was that good for the sons of men, which they should do under the heaven all the days of their life.

²¹Prove all things; hold fast that which is good.

¹³And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.

¹⁴I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.

¹⁰And whatsoever mine eyes desired I kept not from them, I withheld not my heart from any joy; for my heart rejoiced in all my labour: and this was my portion of all my labour.

¹¹Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was vanity and vexation of spirit, and there was no profit under the sun.

¹²¶ And I turned myself to behold wisdom, and madness, and folly: for what can the man do that cometh after the king? even that which hath been already done.

²³¶ All this have I proved by wisdom: I said, I will be wise; but it was far from me.

²⁴That which is far off, and exceeding deep, who can find it out?

²⁵I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishness and madness:

²⁸And unto man he said, Behold, the fear of the Lord, that is wisdom; and to depart from evil is understanding.

¹²And further, by these, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.

¹³¶ Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man.

¹⁸Let no man deceive himself. If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise.

¹⁹For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.

²⁰And again, The Lord knoweth the thoughts of the wise, that they are vain.

¹⁶Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?

²³For all his days are sorrows, and his travail grief; yea, his heart taketh not rest in the night. This is also vanity.

¹³Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom.

¹⁴But if ye have bitter envying and strife in your hearts, glory not, and lie not against the truth.

¹⁵This wisdom descendeth not from above, but is earthly, sensual, devilish.

¹⁶For where envying and strife is, there is confusion and every evil work.

¹⁷But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy.

¹⁵Then said I in my heart, As it happeneth to the fool, so it happeneth even to me; and why was I then more wise? Then I said in my heart, that this also is vanity.