Devotee: Swamijī, seeing as how sorrow and happiness are there by nature's law, wouldn't these be an impediment to our devotional service?
Prabhupāda: No, for a devotee that is not impediment, because he's transcendental to distress and happiness. Spiritual activities are transcendental, ahaituky apratihatā. Ahaitukī: spiritual activities is not done under any cause. We love Kṛṣṇa not with a cause. Just like here in the material world, I love a girl for sense gratification, or I love a boy for sense gratification. There is a cause. And as soon as the cause is disturbed, oh, the love is disturbed, there is impediment. But love of Kṛṣṇa is without cause. It is spontaneous. Therefore there is no impediment. Because the word "love" can be engaged only in relationship with Kṛṣṇa. Otherwise, there is no question of love. So when the love, love of Kṛṣṇa is transcendental, there is no material impediment. Is it clear?