Yogi takes for granted that there is an Iswara--God, gives it to people for concentration purposes, and then they naturally find God in their meditations. But it is only his imagined God.
Mystics see what they are looking for or that whose existence they presuppose. Therefore Yoga belongs to illusion, not truth.
God is mere belief; no one has proved that there is a God. No one has proved that the individual is God or Brahman. Personal experience which is not universally valid is no proof, neither is ecstatic feeling.
What one knows must be tested, to see if it be true or not. Experience must be taken, checked, analyzed and corrected. It is the characteristic of all human beings to believe they understand, even when they do not. Otherwise he may be merely imagining as he like.
The reasoning base has to be rectified from form to formless to get faultless judgement. The defective interpretation is to apply it only to waking state. The correct interpretation is to apply it to the three states. The latter leads to final settlement of the problems because it takes all data into consideration. Opinions belong to scholasticism. And opinions are of no use in pursuit of truth.
If one has a belief, it is because somebody else believes it; or the majority believes it--or it is his own experience. Is it religious authority or religious sanction or is it based upon a feeling of certainty.
People believe it merely because it is for them to believe and very difficult for them to reason. The belief makes one more and more ignorance of the true self. Without realizing the true self is not the physical but the formless soul, the true will not be revealed. The belief system rests on the belief because it is based on the belief. The truth is based on the reason not on the belief. Nearly all people want their own imagination, not truth.