All About Bharatiya Sanatana Dharmam otherwise known as Hinduism : Ch-3.14-2.
CHAPTER- 3 : HINDU DHARMA- 14-2.
14.The Four Castes-2.
There are three qualities or Gunas, viz., Sattva (purity), Rajas (passion) and Tamas (inertia). Sattva is white, Rajas is red and Tamas is black. These three qualities are found in man in varying proportions. Sattva preponderates in some persons. They are Brahmanas. They are wise persons or thinkers. They are the priests, ministers or philosophers who guide kings or rulers. In some, Rajas is predominant. They are Kshatriyas. They are warriors or men of action. They fight with the enemies or invaders and defend the country. In some, Tamas is predominant. They are Vaisyas or traders. They do business and agriculture and amass wealth. Sudras are the servants. None of these qualities is highly developed in them. They serve the other three castes.
In a broad sense, a Sattvic man, who is pious and virtuous and leads the divine life, is a Brahmana, a Rajasic man with heroic quality is a Kshatriya, a Rajasic man with business tendencies is a Vaisya and a Tamasic man is a Sudra. Hitler and Mussolini were Kshatriyas. Ford was a Vaisya.
Serenity, self-restraint, austerity, purity, forgiveness, and also, uprightness, knowledge, Realisation and belief in God are the duties of the Brahmanas, born of (their own) nature. Prowess, splendour, firmness, dexterity, and also, not flying from battle, generosity and lordliness are the duties of the Kshatriyas, born of (their own) nature. Agriculture, cattle-rearing and trade are the duties of the Vaisyas, born of (their own) nature. And action consisting of service is the duty of the Sudras, born of (their own) nature.
Next : 15. The Law of Spiritual Economics
To be continued...