When Sugar Candy Is Bitter - Prabhupada 0613
721026 - Lecture NOD - Vrndavana
When one is suffering from liver disease, or jaundice, he cannot taste the sugar candy. The sugar candy is sweet, but a jaundiced patient, if he's given sugar candy, he'll taste it is bitter.
Similarly, our senses being covered with material consciousness, we cannot at the present moment taste what is Kṛṣṇa's form, what is Kṛṣṇa's name, what is Kṛṣṇa's quality, what is Kṛṣṇa's pastime, what is Kṛṣṇa's paraphernalia, so many things. It is not possible. Ataḥ śrī-kṛṣṇa-nāmādi na bhaved grāhyam indriyaiḥ (CC Madhya 17.136). Our senses are materially contaminated. Therefore we cannot directly perceive, by using our present senses, what is Kṛṣṇa. So it has to be purified.