Ozhukam udaiyavarku ollaave theeya Vazhukiyum vaayaal sola.

For those with proper conduct, it is impossible — even accidentally — to say bad things even when they slip.

ஒழுக்கமுடையவர்களுக்கு வழுக்கினாலும் கூட வாயால் தீய சொற்கள் சொல்வது இயலாத ஒன்று.

For the truly conduct-refined person, even accidental bad speech is impossible — because their speech habits have been so thoroughly trained toward goodness that nothing harmful can escape even during a momentary lapse. True conduct is complete and automatic, not just occasional and effortful.