Thirukkural

நுண்மாண் நுழைபுலம் இல்லான் எழில்நலம் மண்மாண் புனைபாவை யற்று.

Nunmaan Nuzhaipulam Illaan Ezhilnalam Manmaan Punaipaavai Yatru

The beauty and goodness of one who is destitute of knowledge by the study of great and exquisite works, is like (the beauty and goodness) of a painted earthen doll