Sanatkumāra said - ‘When a person learns to think well, then he can know deeply. Without thinking well, one cannot know deeply. One knows for certain when one thinks deeply. But one must want to know how to think well.’ Nārada replied - ‘Sir, I want to know how to think well’.
Chandogya
The Chandogya Upanishad is notable for its lilting metric structure, its mention of ancient cultural elements such as musical instruments, and embedded philosophical premises that later served as foundation for Vedanta schools.

Eighteenth Khanda
Chapters
- First Chapter
- Second Chapter
- Third Chapter
- Fourth Chapter
- Fifth Chapter
- Sixth Chapter
- Seventh Chapter
- First Khanda
- Second Khanda
- Third Khanda
- Fourth Khanda
- Fifth Khanda
- Sixth Khanda
- Seventh Khanda
- Eighth Khanda
- Ninth Khanda
- Tenth Khanda
- Eleventh Khanda
- Twelfth Khanda
- Thirteenth Khanda
- Fourteenth Khanda
- Fifteenth Khanda
- Sixteenth Khanda
- Seventeenth Khanda
- Eighteenth Khanda
- Nineteenth Khanda
- Twentieth Khanda
- Twenty-first Khanda
- Twenty-second Khanda
- Twenty-third Khanda
- Twenty-fourth Khanda
- Twenty-fifth Khanda
- Twenty-sixth Khanda
- Eighth Chapter