1.10 In deep sleep there is an absence of thoughts.

“Though sleep and meditation may appear the same on the outside, deep, dreamless sleep is heavy and unconscious, while deliberately meditating inwardly is alert and conscious.” –Nicolai Bachman, The Path of the Yoga Sutras

1.11 Memory is thinking about a prior experience.

“Memories create impressions in the mind and at a later time come to the surface, either when we want them or sometimes even when we do not want them.” –Sri Swami Satchidananda, The Yoga Sutras of Patanjali

1.1 And now, the teachings of yoga.

“Often this very first sutra is read quickly or even disregarded, which is unfortunate since this sutra is placed first to set the tone.” — Nischala Joy Devi, The Secret Power of Yoga

1.3 When your mind is still, you abide in your own true nature.

“In the state of Yoga, the different preconceptions and products of the imagination that can prevent or distort understanding are controlled, reduced or eliminated. The tendency to be closed to fresh comprehension or the inability to comprehend are overcome.” – T.K.V. Desikachar, Reflections on Yoga Sutra-s of Patanjali