A living entity's name is sarva-gaḥ. Sarva-gaḥ means "one who can go anywhere he likes." Just Nārada Muni. Nārada Muni can travel anywhere he likes, either in the spiritual world or in the material world. So you can also do that. There is possibility. There was a Durvāsā Muni, great yogi. Within one year he traveled all over the universe and went to Viṣṇuloka and again came back. That is recorded in the history. So these are the perfections of life. And how these perfection can be attained? By understanding Kṛṣṇa. Yasmin vijñāte sarvam eva vijñātaṁ bhavanti (Muṇḍaka Upaniṣad 1.3). The Upaniṣad says, if you simply understand Kṛṣṇa, then all these things can be understood very easily. Kṛṣṇa consciousness is such a nice thing.
So today, this evening, we are talking about Rādhāṣṭamī. We are trying to understand the chief potency of Kṛṣṇa. Rādhārāṇī is the pleasure potency of Kṛṣṇa. As we understand from Vedic literature, Kṛṣṇa has many varieties of potencies. Parāsya śaktir vividhaiva śruyate (CC Madhya 13.65, purport). Just like the same example, as a big man has got many assistants and secretaries so that he hasn't got to do anything personally, simply by his will everything is done, similarly, the Supreme Personality of Godhead has got varieties of energies, and everything is being done so nicely. Just like this material energy. This material world, where we are now living... This is called material energy. Bahir-aṅga-śakti. The Sanskrit name is bahir-aṅga, external energy of Kṛṣṇa. So how nicely it is being done, everything in the material energy. That is also explained in the Bhagavad-gītā, mayādhyakṣeṇa prakṛtiḥ sūyate sa-carācaram: (BG 9.10) "Under My superintendence the material energy is working." The material energy is not blind. It is... On the background there is Kṛṣṇa. Mayādhyakṣeṇa prakṛtiḥ (BG 9.10). Prakṛti means this material energy. Similarly... This is external energy. Similarly, there is another energy, which is internal energy. By the internal energy the spiritual world is being manifested. Parās tasmāt tu bhavaḥ anyaḥ (BG 8.20). Another energy, parā, superior, transcendental, the spiritual world. As this material world is being manipulated under the external energy, similarly, the spiritual world is also conducted by the internal potency. That internal potency is Rādhārāṇī.
Rādhārāṇī..., today is Rādhārāṇī's appearance day. So we should try to understand Rādhārāṇī's feature. Rādhārāṇī is the pleasure potency, hlādinī-śakti. Ānandamayo 'bhyāsāt (Vedānta-sūtra 1.1.12). In the Vedānta-sūtra the Absolute Truth is described as ānandamaya, always in pleasure potency. That ānandamaya potency... Just like ānanda. When you want ānanda, pleasure, you cannot have it alone. Alone, you cannot enjoy. When you are in the circles of friend or family or other associates, you feel pleasure. Just like I am speaking. The speaking is very pleasing when there are many persons here. I cannot speak alone here. That is not ānanda. I can speak here at night, dead of night, nobody here. That is not ānanda. Ānanda means there must be others.