Great Sky Beyond Effort Tantra says:

Being its own heart

It arises from that.

Once taught, is seen

And therefore is itself

Sun Suffusing the Thousand Directions, the Bon Teachings Tantra (Bon sde nyi ma stong kyab rgyud) says:

Like taking a rope for a snake

Not seeing what’s there yields delusion

Whereby one wanders in samsara.

Primordially Existent Sky (Nam mkha’ ye srid) says:

Not recognizing just as it is

The mind’s real nature

Is delusion

Lost in enormous, elemental darkness

Endlessly a wanderer, endlessly in circles

The Lord Buddha then warned Subhuti, saying, Subhuti, do not think that the Tathagata ever considers in his own mind : I ought to enunciate a system of teaching for the elucidation of the Dharma. You should never cherish such a thought. And why ? Because if any disciple harboured such a thought he would not only be misunderstanding the Tathagata’s teaching, but he would be slandering him as well. Moreover, the expression “a system of teaching” has no meaning; for Truth (in the sense of Reality) cannot be cut up into pieces and arranged into a system.The

The words can only be used as a figure of speech

 

Great Sky Beyond Effort Tantra says:

Due to inborn unawareness, heart essence itself

Though ever here, goes unrecognized.

Through beginningless delusion

Samsara is engaged, wherein

Attracted to external objects and

With wrongful imputation

We wander the six realms of rebirth

Incurring various dissatisfactions,

Since grasping at objects is deeply ingrained.