Zen expected to become familiar with the classics of the Zen canon". A review of the early historical documents and literature of early Zen masters clearly reveals that they were well versed in numerous Mahāyāna Buddhist sūtras, including Madhyamaka. Especially the Lotus Sutra played a large role in the development of East Asian Buddhism, including Zen. Nevertheless, Zen is often pictured as anti-intellectual. This picture of Zen emerged during the Song Dynasty (960–1297), when Chán became the dominant form of Buddhism in China, and gained great popularity among the educated and literary classes of Chinese society. The use of koans, which
Buddhism in the United States (1927), he became a visible expositor of Zen Buddhism and its unofficial ambassador to Western readers. In 1951, Daisetz Teitaro Suzuki returned to the United States to take a visiting professorship at Columbia University, where his open lectures attracted many members of the literary, artistic, and cultural elite. In the mid-1950s, writers associated with the Beat Generation took a serious interest in Zen, including Gary Snyder, Jack Kerouac, Allen Ginsberg, and Kenneth Rexroth, which increased its visibility. Prior to that, Philip Whalen had interest as early as 1946, and D. T. Suzuki began lecturing on Buddhism at Columbia in 1950.