Ecclesiastes / Question
Ecclesiastes says that increasing wisdom can increase sorrow because greater knowledge exposes more of what is “vexation” in life (Ecclesiastes 1:18). The Teacher links this to his attempt to understand wisdom and folly and the limits of what can be made straight by human effort (Ecclesiastes 1:15–18).
In Ecclesiastes 1:16–18 the speaker reports an inner conclusion after a serious pursuit of learning. He claims unmatched wisdom in Jerusalem and says his mind has been deeply trained in wisdom and knowledge. He then extends his investigation to include madness and folly, only to judge the whole quest as futile, like chasing wind. These verses sit inside the book’s opening investigation where the speaker tests what can be gained “under the sun” through human effort and observation.
These verses present a speaker reporting his own mental “experiment” with wisdom. Explicitly, he claims extraordinary wisdom and broad experience in Jerusalem (verse 16), then describes a deliberate effort to understand both wisdom and “madness and folly” (verse 17).
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with Ecclesiastes 1:18, then read the surrounding section so the answer stays connected to the passage's flow.
18For in much wisdom is much grief; and he who increases knowledge increases sorrow.