SB 12.3.2

kāma eṣa narendrāṇāṁ
 moghaḥ syād viduṣām api
yena phenopame piṇḍe
 ye ’ti-viśrambhitā nṛpāḥ
Synonyms: 
kāmaḥ — lust; eṣaḥ — this; nara-indrāṇām — of the rulers of men; moghaḥ — the failure; syāt — becomes; viduṣām — who are wise; api — even; yena — by which (lust); phena-upame — comparable to ephemeral bubbles; piṇḍe — in this lump; ye — who; ati-viśrambhitāḥ — perfectly trusting; nṛpāḥ — the kings.
Translation: 
“Great rulers of men, even those who are learned, meet frustration and failure because of material lust. Driven by lust, these kings place great hope and faith in the dead lump of flesh called the body, even though the material frame is as fleeting as bubbles of foam on water.