“Although the activities of the mind are countless,
Patañjali categorizes all of them in one of five groups:
Pramāṇa, Viparyaya, Vikalpa, Nidrā, and Smṛti.”
– T Krishnamacharya on Yoga Sūtra Chapter One verse 6
T Krishnamacharya Yoga Sūtra Study Quotes Collected and Collated