As your production is there, give me twenty-five percent. I’ll give you protection.” That is ksatriya business. Brahmana’s business: teaching. And vaisya: till the field, agriculture, get your food. Now, where is dependence? Only a sudra, he cannot take up all these things. “Give me some service, sir. Give me some service.” In the modern education, they… The more and more industries increasing, there sudras are being trained up, technology. Technology means he must get some service; otherwise, useless. Simple life, teaching, brahmana; and ksatriya, give protection; and vaisya, till the ground. Where is the question of scarcity? The scarcity is that nobody’s doing his real duty. Guna-karma-vibhagasah [Bg. 4.13]. And people are exploiting. There is competition, dissatisfaction, fight. So many things, sinful activities. The whole society is polluted.

Srila Prabhupada, Talk on Bhagavad-gita 4.13 — August 5, 1974, Vrndavana