By leading individuals to express their desires within the context of social responsibility, Confucius and his followers taught that the public cultivation of "li" was the basis of a well-ordered society ("Analects" 2.3). Confucius taught his students that an important aspect of "li" was observing the practical social differences that exist between people in daily life. In Confucian philosophy these "five relationships" include: ruler to ruled; father to son; husband to wife; elder brother to younger brother; and friend to friend.