Bostonian Confucians propose their own unique ideas in terms of methodology, metaphysics and activism. With methodology, Nan Le-shan is deeply influenced by Whitehead and takes the naturalistic approach. In terms of metaphysics, he believes that the interaction between yin and yang is the most important issue in classical Chinese philosophy. Regarding activism, he stresses the importance of Li, which he believes is a better way to activate Confucianism.