மனத்தூய்மை என்பது ஆசை இல்லாமல் இருப்பதே; ஆசை இல்லாமல் இருப்பதோ மெய்ப்பொருளை விரும்புவதால் உண்டாகும்‌.

தூய்மை என்பது பேராசையற்ற தன்மையாகும் அத்தூய்மை வாய்மையை நாடுவோர்க்கே வாய்க்கும்

தூயநிலை என்றுக் கூறப்படுவது அவா இல்லா திருத்தலே யாகும், அவா அற்ற அத்தன்மை மெய்ப்பொருளை விரும்புவதால் உண்டாகும்.

Purity (of mind) consists in freedom from desire; and that (freedom from desire) is the fruit of the love of truth

This Kural, verse 364, is a profound reflection on purity of mind. It essentially says that the true purity lies in freedom from desire, which is indeed the ultimate result of truthfulness or love for truth. To dissect it further, the verse puts forth two interconnected ideas. First, it defines purity of mind as being devoid of desires. This could be interpreted as the absence of selfish, materialistic, or ulterior motives that often cloud our judgement and actions. When we free our mind from such desires, we're able to think, act, and live more authentically and selflessly. The second part of the verse goes on to suggest that this state of desirelessness or purity of mind is achieved through the love for truth. This implies that when we earnestly seek and embrace truth in all aspects of life, we naturally distance ourselves from superficial desires. The pursuit of truth helps us recognize the transient and often deceptive nature of worldly desires and thus, leads us towards a more serene and pure state of mind. In essence, this verse from Thiru Kural teaches us that purity of mind comes from freeing ourselves from desires and this freedom can be gained through the love and pursuit of truth. It encourages us to live a truthful and desire-free life for achieving mental purity.