Truthful words are not necessarily beautiful.
Beautiful words are not necessarily truth.
Sages do not argue.
Those who argue are not sages.
Those who have true knowledge
Are different from those with book knowledge.
Those who have book knowledge
Are not wise.
(extracted from Tao Te Ching, chapter 81)
Lawrence CH Hiun
http://www.poemhunter.com/poem/truth-236/