In this second philosophical preamble to actually starting talking about The Fountainhead, I’m going to give an overview of the more relevant part of Rand’s philosophy of Objectivism, the ethics.
Unlike the epistemology, which has a very ad-hoc vibe to it, it’s hard to dispute that Rand’s system of values was present (in increasing degrees) in her earlier novels, until it came to dominate her magnum opus Atlas Shrugged. The length of the novels, and the volume of speechifying, correlates with this. Rand published a distillation of her position in The Virtue of Selfishness in 1961 (predating the epistemology), and it’s this we’ll draw on.