SB 9.19.13
yat prthivyam vrihi-yavam
hiranyam pasavah striyah
na duhyanti manah-pritim
pumsah kama-hatasya te
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
A person who is lusty cannot satisfy his mind even if he has enough of everything in this world, including rice, barley and other food grains, gold, animals and women. Nothing can satisfy him.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Improvement of one’s economic condition is the aim and object of a materialist, but there is no end to this material advancement, for if one cannot control his lusty desires, he will never be pleased, even if he gets all the material wealth of the world. In this age we see much material improvement, but still people are struggling to get more and more material opulence. Manah sasthanindriyani prakrti-sthani karsati. Although every living entity is a part of the Supreme Being, because of lusty desires one continuously struggles for so-called betterment of one’s economic condition. To have a satisfied mind, one must give up his heart disease of lusty desires. This can be done only when one is Krsna conscious.
bhaktim param bhagavati pratilabhya kamam
hrd-rogam asv apahinoty acirena dhirah
(Bhag. 10.33.39)
If one becomes Krsna conscious, then he can give up this heart disease; otherwise this disease of lusty desires will continue, and one cannot have peace in his mind.