So in the Bhagavad-gītā also the Lord says, vedaiś ca sarvair aham eva vedyam (BG 15.15): "The ultimate purpose of Veda is to understand Kṛṣṇa." Ultimate. Vedaiś ca sarvair aham eva vedyam. So Kṛṣṇa or the sādhu and śāstra does not stop your material activities. Because you have to act materially so long you have got this material body, so they give regulation how you should act, so that ultimately you can reach to Kṛṣṇa.
So if we follow the regulation given in the Vedas, then automatically we reach to the highest stage of perfection. That is the purpose of Vedas. Therefore you'll find different subject matter dealt in Vedas, and unless we have a bona fide teacher of the Vedas, it is very difficult to understand Vedic language and take advantage of it.
Therefore Lord Caitanya says that "The subject matter of the Vedas we must understand." And what is that subject matter? That we must know our relationship with God, or with each other, or with this nature, or this world—then what is our action, regulated action—then the prayojana, the ultimate goal of life is reached. 'Kṛṣṇa'-prāpya sambandha, 'bhakti'-prāptyera sādhana. The ultimate end is to reach Kṛṣṇa, or to get Kṛṣṇa. Ultimate end. And that is confirmed in the Bhagavad-gītā: vedaiś ca sarvair aham eva vedyam (BG 15.15). The ultimate purpose of the Vedas is to reach Kṛṣṇa. That's all. So this is the ultimate goal of life, and Vedas describes this, and Caitanya Mahāprabhu is describing also. We shall come to this point gradually.