Jerome

"Whatever my eyes desired I did not deny them; I did not deprive myself of any joy. Indeed my heart drew joy from all my activities, and this was my reward for all my endeavours. "The eyes of the heart and the sight of the mind desire to gaze on spiritual matters, which the sinner does not see, so forbids his heart from true happiness. Therefore Ecclesiastes gave himself completely over to this cause and balanced eternal glory lightly in an world of discord. This is our lot, and our continual reward if we work for our virtues.

Commentary on Ecclesiastes ↗

Bede

They nourish their hearts in self-indulgence who, according to the word of Ecclesiastes, do not prevent their heart from enjoying every wish and from delighting itself in the things which they have prepared. And they count it their due if they themselves make use of their own labors, having no care for the support and solace of the poor.

Commentary on the Catholic Epistles, James 5:5 ↗

Bonaventure

"And all things which they desired" etc. Here the fourth point is touched upon, namely his pleasure in fully enjoying those delectable things which he had prepared; and because there is a certain pleasure which has its origin from without, and a certain one from interior conception, he notes both in himself. …

Commentary on Ecclesiastes, Chapter 2 ↗