The correct answer to this open question is the following.
Although there is no context or references attached, we can say the following.
Taizong used a quote from Confucius to support his argument because Confucious had said that it was good to live a devoted life in which self-cultivation was the key to permanent progression. One important aspect of this permanent search for self-cultivation was to follow the inner voice.
Confucious (551 BC - 479) was one of the great Masters-Teachers in ancient China. He taught his philosophy known as Confucianism. Among the most important teachings of this philosophy, we can find: treat other people with respect, people have to show with manners, people have to practice moderation at all times, respect for ancestors and all family members, a man of honor have to show characteristics such as integrity, honor, high moral standards, and be loyal to his nation.
