Which of the following statements is not a correct description of dao?
a. a strand of ancient chinese moral philosophy emphasizing the cosmic way of dao
b. the basic axiom of dao is silence and inaction
c. daoism maintains that civilized human world is less important than the mysterious realm of nature in promoting social harmony
d. daoism maintains that words cannot capture the profound meaning of dao
e. the concept of dao can be understood by hardheaded clear rational argumentation