"Best humanitarian work"

Therefore the best humanitarian work is to give knowledge to the humanity, not that one is suffering for want of food and... If I give some food, that is good work, but that is not sufficient. I may give food; that's all right. You give. We also give prasadam free. But that does not mean simply by giving prasadam, we are silent. We give knowledge also. This is Krsna consciousness movement. Food, automatically you have to give. That is... There is no prohibition. But at the same time: knowledge. Without knowledge-giving, if he remains ignorant... Just like the same example. If you have got some children, if you don't give them education, simply feed them, that is not your proper duty. You must give knowledge.

Krsna consciousness movement is therefore giving them knowledge. The first knowledge is that we are trying to convince everyone, following the footprints of Lord Krsna, as He wanted to convince in the very beginning, that dehino 'smin yatha dehe kaumaram yauvanam jara [Bg. 2.13]. This is the first knowledge. One should know that he is not this body. He is spirit soul, different from this body. He is living within this body. This is called knowledge. And at the same time, he should be supplied the necessities of the body. 

 Srimad-Bhagavatam 6.2.5-6 -- Vrndavana, September 9, 1975