Lao Zi's Theories of Tao and the Ideas of Keeping Balanced with Nature

We can find many ideas of keeping balanced with nature in the Chinese traditional culture,for example, Lao Zi,the founder of Taoism,was an important person who had ideas like this.His ideas of Tao was related to relations between human beings and nature.Now there are many social issues which are dangerous to human beings because people don't keep balanced with nature.What is the meaning of Lao Zi' s Tao? What can we learn from Tao in the modern society? I think we must research into these issues.We can know how our ancestors kept balanced with nature by researching into Lao Zi' s Tao,which is also important in the modern society.