(Srila Prabhupada in the Radha-Damodara courtyard, Vrindavan, 1972)
Prabhupāda: Kṛṣṇa's grace is always there, but we spoil Kṛṣṇa's grace. That is our business. "But Kṛṣṇa is giving us so much grace. Let us spoil it." That is our proposal. If there was no Kṛṣṇa's grace, how this institution would have come into existence? It was not possible, such a big institution, all by one man's endeavor, starting with forty rupees.
Devotee: It's unbelievable.
Prabhupāda: Simply Kṛṣṇa's grace. So don't spoil that. This... That's not good. Then Kṛṣṇa will not help. Just like the father gives you money. If you squander that, he'll be very sorry. Tat te 'nukampāṁ susamīkṣamāṇaḥ (SB 10.14.8). "Oh, Kṛṣṇa is so kind by giving me this opportunity." You should take things like that, not that "For nothing the father has given me so much money. Let me squander it."
(Srila Prabhupada Conversation, Vrindavan, July 19, 1977)