The ultimate truth or Brahman or God in truth cannot be known by intuition but it can be grasped through Soulcentric reasoning.+

Yoga Vasistha says: ~ Self-knowledge or knowledge of truth is not had by resorting to a Guru (preceptor) nor by the study of scripture, nor by good works: it is attained only by means of inquiry inspired by the company of wise (Gnani). One’s inner light alone is the means, naught else. When this inner light is kept alive, it is not affected by the darkness of inertia. 

There is no need to condemn Gurus, but there is need highlight how they become an obstacle in realizing the ultimate truth or Brahman or God in truth.

Swami Vivekananda said: ~   “You have to grow from the inside out. None can teach you, none can make you spiritual. There is no other teacher, but your own Soul.”

The Guru is useless so long as the ultimate truth is unknown, and Guru is equally useless when the ultimate truth or Brahman   has already been known.

A Guru is needed in religious and the yogic path.  There is no need of a Guru in to acquire Self-knowledge or Brahma Gnana or Atma Gnana. 

Remember:~

There is no need of a Guru, to know you, your Guru, and the world in which you exist are created out of single stuff and that single stuff is the Soul, which is present in the form of the consciousness. Knowledge of that single stuff is the self-knowledge of Brahma Gnana or Atma Gnana. Gnana is given neither from outside nor from another person.

There is no need to follow anyone. There is no need to practice anything. Perfect understanding and assimilation of ‘what is what’ leads to realizing the truth, which is beyond the form, time, and space.

Sage Sankara says: ~ there is no need to study the Scriptures, in order to realize the ultimate truth or Brahman

~ then why you indulge in studying the scriptures.

Sage Sankara says: ~ there is no need to study philosophy, in order to realize the ultimate truth or Brahman

~then why you indulge in studying philosophy.

Sage Sankara says: ~ there is no need to indulge rituals, in order to realize the ultimate truth or Brahman

~then why you indulge in rituals.

Sage Sankara says: ~ there is no need to indulge yoga, in order to realize the ultimate truth or Brahman

~then why you indulge in yoga.

Sage Sankara says:~ the transparent Truth of the Self, which is hidden by the illusion, is to be attained through the instructions of a knower of Brahman, (Gnani)

~ then why you are sticking a Guru who is not a Gnani.

Sage Sankara says ~ “The exercise in discrimination between real and unreal and renunciation of the false is real meditation, then why you are indulging in other types of meditation.

Remember:~

Those who tell you that Brahman is unity, that you can get it only by intuition, that you should not reason, you should not question or inquire, are deluding you. Verification must come by thought.

ZEN Satori is not highest Advaitic or non-dualistic Gnana because it comes as flashes, it does not depend on seeing the world, and does not depend upon mental sharpness so much as intuition. Zen Buddhists are only mystics--they do not offer proof. How is their main method different from that of Christian mystics, Hindu mystics, all of whom do not seek to prove by reason, but by "I know," intuition?

Zen is quite alright in mentioning non-duality: it is the nearest to true Advaita, but nevertheless, it is still inferior because it fails to prove non-duality, it illogically gives koan exercises as a means of attaining That which is beyond attainment, because always here, and it talks of insight or intuition to see Reality when sight involves a second thing, duality.

Zen gives a high important place to meditation practice. The truth is that Zen advocates the necessity of meditation for those of its adherents who cannot grasp the absolute truth.

ZEN is also on this lower stage of Yoga because it depends on flashes of Intuition gained by meditation, not by reasoning.

The ultimate truth or Brahman or God in truth cannot be known by intuition but it can be grasped through Soulcentric reasoning. There is a need to realize first the ‘Self’ is not you but the ‘Self is the formless Soul, which is present in the form of the consciousness. Soulcentric reasoning clears all the clouds and confusion starts clearing on its own and finally you will have no confusion left to say the dualistic illusion as a whole is the Soul (Spirit or consciousness).

One knows everything within the waking experience is consciousness because the waking experience itself is mere an illusion created out of the consciousness. The physical apparatus is absent in deep sleep, so one cannot know anything by intuition because there is no duality in deep sleep. This proves that the duality is present only in waking or dream. And also, it proves that if there be such a faculty as intuition it must be limited to the physical Self within the physical existence.

The Soul is the Self. The Soul is present in the form of consciousness. The Soul is the witness-consciousness that experiences the action, the actor, and the world of separate things. It is like a light that illuminates everything in a theater, revealing the master of ceremonies, the guests, and the dancers with complete impartiality. Even when they all depart, the light shines to reveal their absence. : ~ Santthosh Kumaar