Chapter 9: Raja Vidya Yoga, verse 2
राजविद्या राजगुह्यं पवित्रमिदमुत्तमम्।
प्रत्यक्षावगमं धर्म्यं सुसुखं कर्तुमव्ययम् ॥
Say itrāja-vidyā rāja-guhyaṁ pavitram idam uttamam
pratyakṣhāvagamaṁ dharmyaṁ su-sukhaṁ kartum avyayam
Translation
This is the royal science, the royal secret, the supreme purifier, realizable by direct intuitive knowledge, according to righteousness, very easy to perform and imperishable.
Swami Sivananda
This is the sovereign knowledge, the sovereign profundity, the best sanctifier; directly realizable, righteous, very easy to practice, and imperishable.
Swami Gambirananda
Follows the commentary of Shankara (Advaita).
This is the royal science, the royal mystery, the supreme purifier. It is realized through direct experience, is in accord with Dharma, is pleasant to practice, and is abiding.
Swami Adidevananda
Follows the commentary of Ramanuja (Vishishtadvaita).
This shines among the sciences; it is the secret of monarchs; it is a supreme purifier, comprehensible by immediate perception, righteous, easy to do, and imperishable.
Dr. S. Sankaranarayan
Follows the commentary of Abhinavagupta (Kashmir Shaivism).
This is the supreme science, the supreme secret, the purest and best; it is intuitive, righteous, and to those who practice it, it is exceedingly pleasant.
Shri Purohit Swami
यह सम्पूर्ण विद्याओंका और सम्पूर्ण गोपनीयोंका राजा है। यह अति पवित्र तथा अतिश्रेष्ठ है और इसका फल भी प्रत्यक्ष है। यह धर्ममय है, अविनाशी है और करनेमें बहुत सुगम है अर्थात् इसको प्राप्त करना बहुत सुगम है।
Swami Ramsukhdas
यह ज्ञान राजविद्या (विद्याओं का राजा) और राजगुह्य (सब गुह्यों अर्थात् रहस्यों का राजा) एवं पवित्र, उत्तम, प्रत्यक्ष ज्ञानवाला और धर्मयुक्त है, तथा करने में सरल और अव्यय है।
Swami Tejomayananda
Classical commentariesFor deeper study. Most are in the original Sanskrit.
Advaita
Non-dual: the self and the absolute are one.
Vishishtadvaita
Qualified non-dual: souls are real parts of the divine.
Dvaita
Dual: the soul and God are eternally distinct.
Shuddhadvaita
Pure non-dual, centred on grace and devotion.
Kashmir Shaivism
The Gita read through Trika Shaiva philosophy.
Modern teachers
20th-century teachers writing for today's readers.