Caitanya Mahāprabhu said: "This is the highest worship." Ramyā kācid upāsanā vrajavadhū-vargeṇa yā kalpitā (Caitanya-manjusa). There is no greater, or topmost sample of worship than the gopīs did. Because their only purpose was to serve Kṛṣṇa, unalloyed, without being disturbed by any other consideration. That is highest perfection—how to serve Kṛṣṇa. How Kṛṣṇa will be pleased.
So at the present moment the best service to render for Kṛṣṇa is that . . . Kṛṣṇa . . . when I speak of Kṛṣṇa, means God, the Supreme Lord. The whole rascal world, they have given up God consciousness. They have become rascal. Therefore to teach them about Kṛṣṇa consciousness is the best service at the present moment. Because the whole world—the so-called politician, so-called scientist, so-called philosopher—they're all rascals. They have forgotten God. We, we call them directly, they're all rascals, mūḍhā, duṣkṛtina mūḍhā. All sinful, all rascals, because they have no information of God, Kṛṣṇa.
Ask any scientist, "Do you know anything about Kṛṣṇa?" "Oh, what is Kṛṣṇa? What is God? This is all foolish, humbug." They will say like that. And he's passing as great scientist. He's fool number one, but he's passing as great scientist. (laughter) Hah! Our Śyāmasundara's daughter, little daughter, she preaches, "Do you know Kṛṣṇa?" If somebody says: "No, I do not," "The Supreme Personality of Godhead." (laughter) Actually that is nice preaching.