"Presence" and "Absence" in Lao Tze

Lao Tze's philosophy takes root in the key concept of Tao,which is further expounded in the concepts of presence and absence.According to researches into presence and absence in Lao Tze, People have formed two groups of thoughts.In the first group,Tao equals to absence,and in the second,they both belong to Tao.If we look into their connotations from syntactic structure,part of speech and meaning,we can see that Tao is the highest concept in Lao Tze,and is also the origin of everything.Basically speaking,Tao is the union of presence with absence.Absence indicates the chaotic conditions at the beginning of the world,and presence means actual existence and the very source of everything.Presence and absence have different names but the same source.