Devotee: If someone has a natural kṣatriya tendency, he cannot become a Vaiṣṇava?

Prabhupāda: No. There is no such barrier. Anyone can become Kṛṣṇa conscious.

(Philosophy discussion).

Devotee: If somehow, Śrīla Prabhupāda, someone falls down, does that mean that he did not want to love Kṛṣṇa?

Prabhupāda: Yes.

(Lecture on Bhagavad-Gita-------New Mayapura).

Regarding your second question, in reference to Isopanisad mantra 15, should a devotee ask the Lord to reveal Himself the answer is yes. Unless the Lord reveals Himself, the devotee cannot see Him, He reserves the right of being exposed or not being exposed. The yoga maya curtain is always covering the Lord, and in the Bhagavad-gita the Lord says, "I am not visible to everyone." Even in the material world, a man in the position of Presidentship is not visible to everyone. So one has to qualify himself by devotional service, then God will reveal Himself. So this Isopanisad mantra is an appeal by the devotee to move the veil of yoga maya or the glaring effulgence of Brahma so that the devotee can see Him face to face. The idea is one has to transcend the material conditions as well as the Brahma effulgence, then one can see the Supreme Personality of Godhead. Here the word "face" means the Absolute Truth is a Person. That is the most important point, that God is ultimately a Person.

(Extract of letter to Citsukhananda-------Los Angeles).

Vipina: Well, in the case where a devotee is definitely sincerely following your instructions and applying himself to all these principles that Kṛṣṇa has outlined, then when there's difficulty for him, how is he to understand that?

Prabhupāda: He cannot understand immediately. He must be patient. Utsāhān dhairyāt. Dhairya means patience. He cannot, if you have sown some seed, you cannot expect immediately tree and fruits. You must wait. You must nourish the plant, water it.

(Morning walk--------Washington,D.C.).