Śrīla Bhakti Rakṣak Śrīdhar Dev-Goswāmī Mahārāja
Who is Guru? And why is he Guru? Guru, śāstra, and sādhu are one and the same thing, and we have to appreciate that. Otherwise, should we think that our onward march will be guaranteed only by the vision of our eyes? The photo of our Spiritual Master is not our Guru, although the photo has some connection with the real Guru. The eye experience and the ear experience of a person is not the whole experience. The real experience is through the words, the idea that the Guru has given. That is Kṛṣṇa consciousness.
If I have a real interest in Kṛṣṇa consciousness, I have to adjust all other things accordingly. Otherwise, if I miss the real thing that the Guru came to give me, everything will be dull idol worship. To follow the form alone will be idolatry. There are so many human figures; why is he Guru? Because he is a mediator, a medium of divine knowledge. That is the criterion to be tested everywhere. Put this test anywhere and everywhere. What is the interest for which we came to Kṛṣṇa consciousness? And what is Kṛṣṇa consciousness? There is your Guru. He is Guru only because he is in Kṛṣṇa consciousness, and there are different degrees of Kṛṣṇa consciousness. So, we must not make much about the form.