Kural - 976

'As votaries of the truly great we will ourselves enroll,'
Is thought that enters not the mind of men of little soul

Explanation
It is never in the nature of the base to seek the society of the great and partake of their nature.

Tamil Transliteration
Siriyaar Unarchchiyul Illai Periyaaraip
Penikkol Vemennum Nokku.