From Open Culture:
So what does Rand’s philosophy of objectivism boil down to?
Here is how Rand summed it up in ten words or less: “metaphysics: objective reality; epistemology: reason; ethics: self-interest; politics: capitalism.”
If I was going to break that down a little bit, metaphysics is objective reality, which means we can only rely on our mind and on reason. It’s our only guide to thought and action. Epistemology, reason. The only way we can know anything is through the reasoning mind. Ethics, self-interest. Rand claimed that selfishness was a virtue. It was virtuous to pursue your own interests and defend your own interests. And politics is capitalism because laissez-faire capitalism for her was the only system that allowed the individual to realize his or her full potential and to keep the fruits of his or her labor and not be obligated to others or punished for success.