Who was one of the most influential and articulate modern defenders of egoism?

One of the most influential and articulate modern defenders of egoism was Ayn Rand. Through her philosophy of Objectivism, she championed rational self-interest as a moral imperative, arguing that individuals should act in accordance with their own values and happiness. Rand's novels, particularly "Atlas Shrugged" and "The Fountainhead," illustrate her ideas and have inspired many to embrace egoism as a valid ethical framework. Her work continues to spark debate and discussion on the nature of self-interest and morality.