(Lord Krishna and Arjuna on the Battlefield of Kurukshetra)
"Softer than the flower and harder than the thunderbolt. Two sides. When Kṛṣṇa is strict He's harder than the thunderbolt, and when He's soft, He's softer than the flower. These two examples are given. Vajrād api kaṭhora, kusumād api kamala. So Kṛṣṇa is not lenient to His friend or to His devotee. Because that leniency will not help him, will not help him. Sometimes He appears to be very hard for the devotee, but He's not hard. Just like father sometimes becomes very strict. That is good. That will be proved, how Kṛṣṇa's hardness will prove his salvation. At the end Arjuna will admit, 'By Your mercy, my illusion is now over.' So this sort of stricture by..., from God on the devotee is sometimes misunderstood. Because we are always accustomed to accept what is immediately very pleasing, but sometimes we'll find that we are not getting which is immediately very pleasing, but we should not be disappointed. We shall stick to Kṛṣṇa."
(Srila Prabhupada Lecture, Los Angeles, November 25, 1968)