《抱朴子·内篇·论仙》
昏暗愚昧滞留在心神，就不相信昔日曾有过周公、孔子，何况告诉他神仙之道呢？
暗昧滞乎心神，则不信有周孔於在昔矣。况告之以神仙之道乎？
Murkiness and ignorance remain in the soul; it does not even believe in the existence of Zhou Gong and Confucius from the past—what's more, telling them about the ways of immortals?