ARCHED SYPHON OF THE ALVIELLA AQUEDUCT.
Prabhupada's letter excerpt: 26th May, 1975
Cow protection is the business of the vaisyas and along with our preaching, this is the most important work. We must have a good section of Brahmanas in our society and we must also have a good group of vaisyas who can grow grains and tend cows, and thus supply the society with food-grains and milk products from the cow like ghee, curd, cream, etc.