Sudrude nirnayeh yatra jneyam tatsakshidarsanam
yatkavachit vyabhichari syat darsanam maanasam tutat
Manase darsane dosham syunyavau sakshidarsane
Atoshdoshpratitasya satyatva sakshinam matam

"The perception by the Saksi is that in our experience, which is not open to sublation and which is decisive in character. Knowledge, acquired through sensory channels and the mind and subject to discrepancies, is to be regarded as a modification of the mind-stuff. This latter is liable to correction and sublation; while the former is not.

What is thus established by the flawless verdict of Saksi, must be regarded as true and valid for all time."

The above passages explain the reasons for attributing to Saksi-pratyaksa the quality of infallibility and self-validation, which are denied to sensory and mental perceptions. The mind and the senses, being materially constituted, are liable to err and are open to misconceptions, albeit rarely. But the experiences and judgments of the Saksi stand on a higher footing. They could not be doubted. They have never been shown to have been mistaken or invalidated, at any time within one’s conscious experience. The proof of this is furnished by the most intimate and poignant experiences of pleasure, pain, dread and self-awareness and such other inward experiences about whose reality none of us has had any occasion to entertain the least doubt, afterwards.