The Analects, or "Selected Sayings"), also known as the Analects of Confucius, is the collection of sayings and ideas attributed to the Chinese philosopher Confucius and his contemporaries, traditionally believed to have been written by Confucius' followers. It is believed to have been written during the Warring States period (475 BC-221 BC), and it achieved its final form during the mid-Han dynasty (206 BC-220 AD). Confucius believed that the welfare of a country depended on the moral cultivation of its people, beginning from the nation's leadership. He believed that individuals could begin to cultivate an all-encompassing sense of virtue through ren, and that the most basic step to cultivating ren was devotion to one's parents and older siblings.