Po Tian Asked

What is Tao... Why... Tao can be Tao, very Tao...? Why is human nature... What is human nature... In the beginning, human beings are inherently good...? The long yellow sand cannot be walked out for thousands of miles, and the rolling red dust cannot be seen through ten feet. Is it the way to cultivate one's body after being born out of the world, or is it the way to cultivate one's mind after entering the world? The journey of cultivating Taoism and the desire to ask questions are all in "Po Tian Wen Dao"...