Confucianism is a philosophy that originated from the teachings of the Chinese philosopher Confucius. It arrived in Japan in the Yamato period, via the Korean peninsula. The Japanese Prince Shōtoku created a system of "caps and ranks" and made a constitution of seventeen articles to harmonize the then chaotic society. In the Edo period, Neo-Confucianism was one of the leading philosophies in Tokugawa government and education. In Confucianism, the relationship between parents and children is important, filial piety, which is considered the greatest virtue of Confucianism. Younger members of society are obliged to respect and take care of their parents and elders. Children must put their parents' needs before their own, respect their judgment and act accordingly. Children should help their parents with finances and physical and daily chores. China was largely a patriarchal country, where sons were preferred because they could do hard physical work and take care of the elderly, while daughters were considered a burden. Women only had a role in the house as housewife mothers who take care of children and husbands, while men also had a role outside. Although we cannot know what Confucius thought of women, it is clear from the Analects that he considered women to be a lower class, he did not think they were equal to men. In yin-yang, women are yin, passive, quiet and inferior, while men are yang, strong, powerful and superior. In Confucianism, the ethical system of virtues is important to how people should lead their lives. The six virtues are happiness (xi), wisdom (zhi), correctness(li), righteousness (yi), loyalty (zhong), reciprocity (shu), cultural refinement (wen), integrity (shin) and benevolence (ren). Such qualities are necessary for the development of ethics and morality. Those who strive for perfection benefit from learning Confucian values. Confucianism is most widespread in East Asia, but it has left an impact in Europe and the rest of the world. Today it has a deep influence in China and South Korea, while in Japan it is no longer a current philosophy. Confucianism influenced schooling as well as ideals such as loyalty, respect and harmony.