Kural - 640

For gain of end desired just counsel nought avails
To minister, when tact in execution fails

Explanation
Those ministers who are destitute of (executive) ability will fail to carry out their projects, although they may have contrived aright.

Tamil Transliteration
Muraippatach Choozhndhum Mutivilave Seyvar
Thirappaatu Ilaaa Thavar.