Why Is the Tremor of the Mind Sufficient to Counteract the Vasana of Manas?

Because the shock to the mind directly impacts the seventh consciousness, compelling it to alter its habitual tendencies. Only when the seventh consciousness encounters direct perception of reality does it experience shock; the sixth consciousness (mental consciousness) does not experience shock—it easily comprehends matters but remains superficial. The tremors and shocks mentioned all pertain to the seventh consciousness; only when the seventh consciousness recognizes the truth can it change itself.

The shock felt by the sixth consciousness primarily stems from its impact on the seventh consciousness, which then makes decisions—either to change itself or to confirm certain Dharma principles. Ordinarily, no amount of intimidation from others has any effect, because the seventh consciousness remains unshaken. But once the seventh consciousness realizes the severity of a situation, it experiences shock and resolves that it must change itself and must act in specific ways.

How many people recite "no-self, no-self" daily, yet in action remain entirely self-centered? Why is this? Because the seventh consciousness does not yet comprehend "no-self." The day it becomes utterly convinced of the truth of no-self—that would be a true shock! From then on, it would transform itself, manifesting changes in both body and mind.