The Yoga Sutras of Patanjali—Integral Yoga Pocket Edition: Translation and Commentary by Sri Swami Satchidananda
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The Yoga Sutras of Patanjali—Integral Yoga Pocket Edition: Translation and Commentary by Sri Swami Satchidananda

39Or by meditating on anything one chooses that is elevating.
they formulated the yogic diet, free of meat, fish, eggs, stimulants, and excessive use of spices.
The mind is a veil woven of thoughts. It has no substance by itself. If we pull the thoughts out one after the other, when they have all been removed, there is no mind left.
8Misconception occurs when knowledge of something is not based upon its true form.
45The subtlety of possible objects of concentration ends only at the undefinable.
When doubt is there, there is a carelessness, a sort of lethargic attitude or laziness. When the mind loses the interest and alertness toward the higher goal, it has to do something else so it will slowly descend to the sensual enjoyments.
3Then the Seer (Self) abides in Its own nature. You are the true Seer. You are not the body nor the mind. You are the Knower or Seer. You always see your mind and body acting in front of you. You know that the mind creates thoughts; it distinguishes and desires. The Seer knows that but is not involved in it.
Every time you do something feel, “May this be dedicated to God.” If you constantly remember to do this, the mind will be free and tranquil.
Pleasure and pain are but the outcome of your approach. The same world can be a hell or a heaven.