I searched in my heart how to cheer my flesh with wine, my heart yet guiding me with wisdom, and how to lay hold of folly, until I might see what it was good for the sons of men that they should do under heaven all the days of their lives.

Whatever my eyes desired, I didn't keep from them. I didn't withhold my heart from any joy, for my heart rejoiced because of all my labor, and this was my portion from all my labor.

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

The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth.

This is an evil in all that is done under the sun, that there is one event to all: yes also, the heart of the sons of men is full of evil, and madness is in their heart while they live, and after that they go to the dead.

A wise man's heart is at his right hand, but a fool's heart at his left.

Rejoice, young man, in your youth, and let your heart cheer you in the days of your youth, and walk in the ways of your heart, and in the sight of your eyes; but know that for all these things God will bring you into judgment.