SB 10.51.52
karoti karmani tapah-sunisthito
nivrtta-bhogas tad-apeksayadadat
punas ca bhuyasam aham sva-rad iti
pravrddha-tarso na sukhaya kalpate
Translation:
A king who desires even greater power than he already has strictly performs his duties, carefully practicing austerity and forgoing sense enjoyment. But he whose urges are so rampant, thinking “I am independent and supreme,” cannot attain happiness.