I considered labelling this chapter as Sankhya Yoga, Jnana Yoga and other kinds of analytical names. As English is the main language here I thought I would simply call it Analytical Thought.
Yoga has its practical side and its analytical side which serve to reinforce each other. Success in Yoga needs practice and yet practice without an analytical basis is tantamount to blind rote behaviour. On the other hand an analytical basis requires new experiences based on action to be confirmed as truth, just as scientific hypotheses need practical experiments to be confirmed.
With this in mind here are some lines of thought which when understood give rise to the faith that is needed for further practice and discipline.