The Tao, Chapter 70.

My words are easy to understandand easier to put into practice.Yet no one in the world seem to understand them,and are not able to apply what I teach. My teachings come from the ancients,the things I do are done for a reason. Because you do not know me,you are not able to understand my teachings.Because those who know me are few,my teachings become even more precious. -- Translated by J. H. McDonald