Madhudviṣa: Verse thirty-four: "Just try to learn the truth by approaching a spiritual master. Inquire from him submissively and render service unto him. The self-realized soul can impart knowledge unto you because he has seen the truth." Purport . . .
Prabhupāda: This is the process of understanding spiritual knowledge. "Just try to learn the truth by approaching a spiritual master." So if you want to learn, this is a commonsense affair. Whatever subject matter you want to learn, you have to find out an expert.
Suppose if you want to learn engineering, so you cannot go to a butcher; you must find out an engineer. You must admit yourself into the engineering college, learn how to practice engineering. Suppose if you want to become a medical practitioner, so you have to admit yourself in some medical college. Similarly, if you want to know about spiritual matter, then you must approach a spiritual master who knows the things. How you can learn it from anywhere and everywhere? One must be expert in spiritual knowledge. From him you have to learn. Therefore it is said here, "Just try to learn the truth by here . . ."
"Truth" means the Absolute Truth, not relative truth. Or even if you want to know relative truth, you have to approach a particular expert. But here, it is indicated, truth means the Absolute Truth. So Kṛṣṇa indicates that, "Just try to learn the truth by approaching a spiritual master." Tad-vijñānārthaṁ sa gurum evābhigacchet.
That is the Vedic injunction.