सर्वद्वारेषु देहेऽस्मिन्प्रकाश उपजायते | ज्ञानं यदा तदा विद्याद्विवृद्धं सत्त्वमित्युत
sarvadvāreṣu dehe.asminprakāśa upajāyate . jñānaṃ yadā tadā vidyādvivṛddhaṃ sattvamityuta
当知识之光通过此身体的所有门户（感官）放射时，那时就应知悦性（sattva）已大大增长。
When the illumination that is knowledge radiates in this body through all the doors (of the senses), then one should know that sattva has increased greatly.
当某种德性占据主导时，它会在人身上展现出其独特的特征。正如茉莉花香远播，知识也向四面八方传播。将惰性转化为激性，再将激性转化为悦性，然后坚定地安住于悦性之中。你将获得光明的增长、纯净、平静与和谐。悦性将引导你向上，你将感受到一股向至高之光的向上牵引力。悦性饮食、持咒（Japa）、冥想、研读圣典、独居、与圣者为伴、歌颂神名与荣耀，以及调息（Pranayama）都将增加悦性。内省，向内看，仔细观察三德（Gunas），保持警惕，像守门人一样，只允许悦性思想通过心智工厂的大门。遏制激性，抑制惰性。当悦性占据主导时，心智会平静无波，内心和谐，完美宁静与安详。同时也有清晰的洞察力，理解力不被蒙蔽，具有穿透性的洞察力。直觉之门敞开。感官不会追逐外在对象。感官是感官知识的通道，是真我感知的门户。当光芒照耀身体的所有门户，如眼睛、耳朵等（换句话说，当内在器官的智慧波动显现时），知识便会产生。你可以通过知识的标志来判断悦性占据主导。你也可以通过幸福的标志来判断悦性正在增长。正如修行者通过知识和幸福的标志知道悦性在他身上占据主导一样，他也可以通过知识的标志知道激性（Rajas）和惰性（Tamas）正在逐渐减少。耳朵避开不应听闻之物，眼睛放弃不应观看之物，舌头避免说不当之言，心智不被感官对象吸引。通过持咒、冥想和自我约束，纯净逐渐增长。如果悦性或和谐增加，知识也会增加。悦性是获得真我知识的唯一可靠途径，它为知识奠定基础。
When a particular ality becomes predominant? it reveals its distinctive characteristics in man. Just as jasmine scatters its fragrance far and wide? so also knowledge disseminates itself in all directions. Convert Tamas into Rajas and Rajas into Sattva. Now stand firm in Sattva. You will get increase of light? purity? peace and harmony. Sattva will lead you upwards. You will have an upward pull towards the Supreme Light. Sattvic diet? Japa? meditation? study of holy scriptures? living in seclusion? company of holy men? singing His Names and glories? and regulation of breath (Pranayama) will increase Sattva.Introspect. Look within. Watch the Gunas carefully. Be vigilant. Stand as a doorkeeper. Allow only Sattvic thoughts to pass through the door of the mental factory. Check Rajas. Curb Tamas. When Sattva predominates there is unruffled peace of mind? inner harmony? perfect serenity and tranillity. There is clarity or clear vision also. The understanding is not clouded. There is penetrative insight. The door or threshold of intuition is wide open. The senses will not run towards external objects.The senses are the avenues of senseknowledge. They are the gateways of perception for the Self. When light shines in all the gates of the body? such as the eyes? the ears? etc. (in other words when there is the manifestation of the BuddhiVritti of the Antahkarana)? then knowledge arises. You can understand by the mark of knowledge that Sattva is predominant. You can also know that Sattva is increasing by the mark of happiness. Just as the aspirant knows that Sattva is predominant in him by the marks of knowledge and happiness? so also he knows by the mark of knowledge that Rajas and Tamas are gradually decreasing.The ears shun whatever is improper to be heard. The eyes abandon what they should not look at. The tongue avoids to speak anything that is not right to speak of. The mind is not attracted by the sensual objects. Purity thus increases gradually by Japa? meditation? and selfrestraint. If there is increase of Sattva or harmony? there is also increase of knowledge. Sattva is the only sure means for the attainment of the knowledge of the Self. It lays the foundation of knowledge.