The cultural distance between the elites and the commoners narrowed a little during the Kamakura period. Buddhism was spread to ordinary Japanese by energetic preachers. Honen (1133–1212) propagated the Pure Land teaching, preaching that paradise could be reached through simple faith in the Buddha and repeating the name of the Buddha Amitabha. His follower Shinran (1173–1263) taught that monks should not shut themselves off in monasteries but should marry and have children. A different path was promoted by Nichiren (1222–1282), a fiery and intolerant preacher who proclaimed that to be saved people had only to invoke sincerely the Lotus Sutra, one of the most important of the Buddhist sutras. These lay versions of Buddhism found a receptive audience among ordinary people in the countryside.

It was also during the Kamakura period that Zen came to flourish in Japan. Zen teachings originated in Tang China, where they were known as Chan (see “Tang Culture” in Chapter 7). Rejecting the authority of the sutras, Zen teachers claimed the superiority of mind-to-mind transmission of Buddhist truth. This teaching found eager patrons among the samurai, who were attracted to its discipline and strong master-disciple bonds.

Buddhism remained central to the visual arts. Many temples in Japan still house fine sculptures done in this period. In painting, narrative hand scrolls brought to life the miracles that faith could bring and the torments of Hell awaiting unbelievers.

During the Kamakura period, war tales continued the tradition of long narrative prose works. The Tale of the Heike tells the story of the fall of the Taira family and the rise of the Minamoto clan. The tale reached a large and mostly illiterate audience because blind minstrels would chant sections to the accompaniment of a lute. The story is suffused with the Buddhist idea of the transience of life and the illusory nature of glory. Yet it also celebrates strength, courage, loyalty, and pride.

After stagnating in the Heian period, agricultural productivity began to improve in the Kamakura period, and the population grew, reaching perhaps 8.2 million by 1333. Much like farmers in contemporary Song China, Japanese farmers adopted new strains of rice, often double-cropped in warmer regions, made increased use of fertilizers, and improved irrigation for paddy rice. Besides farming, ordinary people made their livings as artisans, traders, fishermen, and entertainers. Although trade in human beings was banned, those who fell into debt might sell themselves or their children, and professional slave traders kidnapped women and children. A vague category of outcastes occupied the fringes of society, in a manner reminiscent of India. Buddhist strictures against killing and Shinto ideas of pollution probably account for the exclusion of butchers, leatherworkers, morticians, and lepers, but other groups, such as bamboo whisk makers, were also traditionally excluded for no obvious reason.