ARI promotes Objectivism, the philosophy developed by Ayn Rand. The Ayn Rand Institute promotes Peikoff's view of Objectivism. This is a bibliography for Ayn Rand and Objectivism. Some include virtue ethics, social contract, Kantian ethics, utilitarianism, and Objectivism. He is an adherent of Objectivism, a philosophy created by Russian-American writer Ayn Rand. Around this time he took an interest in Ayn Rand's philosophy of Objectivism. Halbwachs also began to focus on scientific objectivism rather than his Bergsonian Individualism. Vatz thus emphasizes social construction in opposition to Bitzer's realism or objectivism. Many libertarians justify their political views using aspects of Objectivism. The book explores a number of philosophical themes from which Rand would subsequently develop Objectivism. Many right-libertarians justify their political views using aspects of Objectivism. Volosinov rejects abstract objectivism perpetuated by the language distinction between langue and parole. Rand hosted a radio program on Objectivism on the Columbia University station, WKCR-FM. Objectivism includes an extensive treatment of ethical concerns. Ditko was an ardent supporter of Objectivism.