That which harms in the spiritual path (& progress) and benefits the worldly life, it is called deluded intellect (viprit buddhi). And enlightened intellect (samyak buddhi) helps in both, the spiritual as well as worldly realm.

Sadbuddhi (positive intellect which helps in spiritual path & helps in adjustment in worldly life) means that it will not give rise to any contradiction. Sadbuddhi arises when you sit with a Gnani Purush (the enlightened one) for an hour.

The whole world is absorbed in the intellect. Only when one moves away from the intellect and comes into the Light of Knowledge, can one become the absolute Supreme Self (parmatma).

Good’ and ‘bad’ (right and wrong) are (thoughts) based on the intellect [buddhi]. Stay away from it and keep anasakatayog [state devoid of attraction/attachment]. What is the nature of the ‘Soul’ (Our Real Self)? ‘Anasakta’ [devoid of attraction/attachment]. ‘You’ also become ‘Anasakta’ by your (inherent) nature.

The mind, intellect and chit are all carrying out their own functions. It is our interference in that. 'Our' does not mean of the Self. There is a wedge of ‘I’ in between these two. Why is egoism present? It is due to the rising of a ‘wrong belief’. 

The mind performs its function, the intellect performs its function, the ego performs its function; they are all intents of the non-Self, they are not intents of the Self (Atmabhaav). To See and Know the intents of the non-Self is in fact Atmabhaav (the sense as the Self). There are unlimited intents of the non-Self. The world is trapped in the intents of the non-Self indeed.

How can one let go of dehadhyas (the belief that, 'I am the body') whilst residing in dehadhyas? For that, go to a Gnani (a Self-realized being), the One who has become a tarantaaranhar (One who has become liberated and can liberate others). The dehadhyas cannot go away through dehadhyas.

Except for pure Soul (Shuddhatma), the mind, speech, body, intellect is all subject to vyavasthit (energy that runs the world). It is all scientific circumstantial evidences. With 'This is mine' and 'I am (this)', divisions occurred, and that is why all these difficulties exist, intents of false attribution (aropit bhaav) arose. That is why one missed out on one's own form as the Self (swaroop)!

The [true] intellectual is he who does not let harm done to others and nor let any harm done to even one's own self.