Actually, the purpose of our life is to please Krishna; that is the business of the older children, to serve the father. So there is test for knowing if I am pleasing Krishna: If He reveals Himself to me, if I see Krishna, then I know I am pleasing Krishna. And another test is if my Spiritual Master is pleased by my service then I know that I am pleasing Krishna; it is very simple, because if I am following the prescribed regulative principles of my Spiritual Master, then without doubt I am pleasing him.
Letter to Kirtiraja, 28 February, 1972