Those who give education in exchange for money – they are not brahmanas. For instance, we are lecturing, educating people. We don't say, "Give us a salary." We simply ask them, "Please come." That is why we are cooking food and holding so many free festivals. "We'll give you food. We'll give you a comfortable seat. Please come and hear about self-realization and God consciousness." We are not asking money – "First of all pay the fee; then you can come and learn Bhagavad-gita." We never say that. But these so-called teachers who first of all bargain for a salary – "What salary will you give me?" – that is a dog's concern. That is not a brahmana's concern. A brahmana will never ask about a salary. A brahmana is eager to see that people are educated. "Take free education and be educated; be a human being" – this is a brahmana's concern: You see? I came here not to ask for any money but to give instruction.

(From "Slaughterhouse Civilization" in "The Journey of Self-discovery", by Srila Prabhupada)