The academic freedom is the internal motive of the academic development in colleges and universities,which is united by the internal freedom and the external freedom.

From the context,the concept of Kant\'s political freedom has three layers:outer freedom of lawyer,individual freedom of citizen and freedom of publically using reason.

The logical standing point of Lu Xun s thought and literature is "to be a man",but how could he do this? Viewed from Lu Xun s life and thought expressed on his works,the theoretical strongpoint of "to be a man" is man s free living.