Eastern philosophy
The "Dao De Jing" ("Tao-Te-Ching," c. 4th century BCE), traditionally attributed to Laozi, and the "Nan Hua Jing" ("Zhuang Zi") are considered the key texts of the tradition. The first organized form of Taoism, the Tianshi (Celestial Masters') school arose in the 2nd century CE. Xuanxue ("deep learning", also "Neo-Taoism") was a major philosophical movement influenced by Confucian scholarship, which focused on the interpretation of the "Yijing," "Daodejing," and "Zhuangzi" and which flourished during the third to sixth centuries CE. The most important philosophers of this movement were He Yan, Wang Bi, the Seven Sages of the Bamboo Grove, Ge Hong and Guo Xiang. Thinkers like He Yan and Wang Bi focused on the deep nature of Tao, which they saw as being best exemplified by the term "Wu" (nothingness, non-being, negativity).
Ayn Rand
Rand acknowledged Aristotle as her greatest influence and remarked that in the history of philosophy she could only recommend "three A's"—Aristotle, Aquinas, and Ayn Rand. In a 1959 interview with Mike Wallace, when asked where her philosophy came from she responded: "Out of my own mind, with the sole acknowledgement of a debt to Aristotle, the only philosopher who ever influenced me. I devised the rest of my philosophy myself." However, she also found early inspiration in Friedrich Nietzsche, and scholars have found indications of his influence in early notes from Rand's journals, in passages from the first edition of "We the Living" (which Rand later revised), and in her overall writing style. However, by the time she wrote "The Fountainhead", Rand had turned against Nietzsche's ideas, and the extent of his influence on her even during her early years is disputed. Rational egoism was embodied by Russian author Nikolay Chernyshevsky in the 1863 novel "What Is to Be Done?" and several critics claim that "What Is to Be Done?" is one of the sources of inspiration for Rand's thought. For example, the book's main character Lopuhov says "I am not a man to make sacrifices. And indeed there are no such things. One acts in the way that one finds most pleasant." Among the philosophers Rand held in particular disdain was Immanuel Kant, whom she referred to as a "monster", although philosophers George Walsh and Fred Seddon have argued that she misinterpreted Kant and exaggerated their differences.