As key concepts in Confucianism, ”Ren”, ”Yi”, and ”conscious” can be considered as self-knowledge that needs to be revealed by practice. However, since self-knowledge centered philosophical systems are not objectively persuasive, many western philosophers do not take them seriously and even consider them a religion. However, the newly development of western philosophy and cognitive science may make self-knowledge more objective. Based on this, we can use this new development to find a way of how to make Confucianism more objectively persuasive.