Actually money means . . . either livestock or grain stock, that is money. So in Sanskrit literature we find dhānyena dhanavān. One who has got large quantity of paddy, rice, he is rich man. Still in India, in villages, when a daughter is to be offered to a particular house, it is inquired, "How much stock of grains that family has got?"
They do not inquire, "How much stock exchange he has got in the bank?" (laughter) No. But factually, if you have got grains at your home, then there is no question of economic problem. If you have simply got grains and cow, then you won't have to go other place. You are . . . that was the basic principle of civilization, that you possess some cows and some land so that you can produce foodstuff. That's all. Your whole economic problem is solved. You see?
So therefore so much stress is given for cow protection. Amongst the division of society, the brahmins, the kṣatriyas and the vaiśyas and the śūdra . . . Śūdras means non-Āryan. And Āryans, they are divided into three higher castes. Caste means according to profession and quality. That is caste. In the Bhagavad-gītā it is stated, cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13).