I would say between 1000 and 2000
Objectivism is a philosophy that stresses the external rather than the internal. They believe that most things exist outside of what people know or feel and that the truth especially exists beyond what people know.
The phrase "clear sight and clean soul" supports this belief because in order to see things that are outside of yourself you need to have clear sight, the ability to see things beyond what you already know and believe. You also need to have a clean soul in order to look at things with a fresh perspective.
I am thinking.. accomplice?
Communism. She pursued her communist beliefs and included them in her writing, and was also a member of several communist book clubs.
She is also strongly associated with feminism, her fight for equality and women's rights.