¹³ And 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.

¹⁰ I have seen the travail, which God hath given to the sons of men to be exercised in it.

¹⁹ In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.

¹⁷ And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.

¹⁶ When I applied mine heart to know wisdom, and to see the business that is done upon the earth: (for also there is that neither day nor night seeth sleep with his eyes:)

¹⁷ Then I beheld all the work of God, that a man cannot find out the work that is done under the sun: because though a man labour to seek it out, yet he shall not find it; yea farther; though a wise man think to know it, yet shall he not be able to find it.

²⁵ I 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:

¹⁵ Meditate upon these things; give thyself wholly to them; that thy profiting may appear to all.

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

⁹ All this have I seen, and applied my heart unto every work that is done under the sun: there is a time wherein one man ruleth over another to his own hurt.

⁴ Again, I considered all travail, and every right work, that for this a man is envied of his neighbour. This is also vanity and vexation of spirit.