Those who are very eager to advance in transcendental knowledge can engage themselves in pure devotional service, without wasting time in mental speculation. For arriving at the positive conclusions of knowledge in the Absolute Truth, the word brahma-darsanam is significant in this verse. Brahma-darsanam means to realize or to understand the Transcendence. One who engages in the service of Vasudeva can actually realize what Brahman is. If Brahman is impersonal, then there is no question of darsanam, which means seeing face to face. Darsanam refers to seeing the Supreme Personality of Godhead, Vasudeva. Unless the seer and the seen are persons, there is no darsanam. Brahma-darsanam means that as soon as one sees the Supreme Personality of Godhead, he can at once realize what impersonal Brahman is. A devotee does not need to make separate investigations to understand the nature of Brahman. Bhagavad-gita also confirms this. Brahma-bhuyaya kalpate: a devotee at once becomes a self-realized soul in the Absolute Truth.