Guru Angad Dev Quote

The mouth is not satisfied by speaking, and the ears are not satisfied by hearing. The eyes are not satisfied by seeing-each organ seeks out one sensory quality. The hunger of the hungry is not appeased; by mere words, hunger is not relieved. O Nanak, hunger is relieved only when one utters the Glorious Praises of the Praiseworthy Lord.

Guru Granth Sahib p. 147