Kural - 79

Though every outward part complete, the body's fitly framed;
What good, when soul within, of love devoid, lies halt and maimed

Explanation
Of what avail are all the external members (of the body) to those who are destitute of love, the internal member.

Tamil Transliteration
Puraththurup Pellaam Evanseyyum Yaakkai
Akaththuruppu Anpi Lavarkku.