This Kṛṣṇa consciousness movement is trying to awaken people: "Wake up!" Uttiṣṭhata jāgrata prāpya varān nibodhata (Kaṭha Upaniṣad 1.3.14). You have got this opportunity. Try to understand yourself. Why you should go on like animals and imperceptibly change your body from one to another, one to another? This is bhava-roga. This is not very good position. So we shall request you to take advantage of this movement, join it, study and inquire, and be actually in knowledge. Jñānaṁ vijñānam āstikyaṁ brahma-karma svabhāva-jam (BG 18.42). This is the business of brāhmaṇa, one who knows Brahman. Jñānaṁ vijñānam āstikyam. Āstikyam means to have faith in the authoritative Vedic knowledge. That is called āstikyam.
According to our Vedic principle, one who has full faith in the Vedic knowledge, he's āstika. And who has no faith in the Vedic knowledge, he's nāstika. So be āstika; don't be nāstika. There is no useful purpose becoming a nāstika. Be āstika. And the essence of Vedic knowledge is Bhagavad-gītā because the Supreme Personality of Godhead is speaking personally. Take advantage of it. Apply it practically in life and be happy, not only in this life, but the next life.