Caste System, Confucianism, and Zoroastrianism

According to the Bhagavad Gita, a person in society should live to their fullest potential and do as they please, while still remaining in their designated place in society.  Somebody in the caste system must battle and die honorably, or they will become a victim of infamy.  Knowledge and understanding, not material and worldly possessions, bring power and happiness.  In Zoroastrianism, people should do good unto everyone else and followers of Zoroastrianism believe in free will, the ability to do as they desire.  Confucius beliefs include that humans are able to be taught to take a path of righteousness through self-cultivation and should be altruistic, or help others than are needy.  All three of these belief systems follow the idea that people should always do good.  The caste duties mainly follow that people should not be attached to material items, while the other two do not touch upon this idea.  Zoroastrianism gives the idea of free will, which is weaker in the Bhagavad Gita, and not mentioned in Confucianism.  Confucius beliefs are about bettering oneself through teaching, while Zoroastrianism does not refer to this and the Bhagavad Gita just believes in being able to better themselves without the use of a sage or instructor.