Satchidananda

One of the words for the Self is "Satchidananda"
Sat-chid-ananda

Sat is truth or being
Chit is consciousness, awareness or sentience
Ananda is infinite bliss, or that which is free of sorrow

Satchidananda is also the triple factor of knower, knowing and known
Sat can be thought of as the knower
Chit is the knowing
Ananda is the known

The Self *is* the triple factor.

Ramana Maharshi said, "Even though we usually describe the Reality as Sat, existence, Chit, consciousness, Ananda, bliss; even that is not quite a correct description. It cannot really be described. By this description all that we endeavor to make plain is that it is not asat, not non-existent, that it is not jada, not insentient, and that it is free from all pain."

It is none other than the indisputable awareness of your own being, ever existent, ever free.

Tat tvam asi: thou art That.