Kṛṣṇa describes the person who has grasped this truth. Whoever knows Him as the ‘Puruṣottama’ (the Supreme Person) without a single doubt is considered a ‘Sarva-vit’—a knower of everything. Because they have found the Source, they naturally worship Kṛṣṇa with their whole heart and soul. You don’t need to be a scholar of every scripture to be wise. If you simply know that Kṛṣṇa is the Supreme Person and the ultimate goal, you have already captured the essence of all knowledge. Just as by watering the root of a tree you water all the leaves, by knowing Kṛṣṇa, you understand the entire universe. ‘Sarva-bhāvena’ means with all one’s emotions and intentions. True knowledge results in a change of heart. When the brain realizes who Kṛṣṇa is, the heart instinctively begins to love Him. This total integration of knowledge and feeling is the hallmark of a self-realized soul.