The seventeenth letter of the Hebrew alphabet, it symbolizes "the mouth." "We speak Grace (we communicate knowledge through Peh, the mouth) that we do know (in Daath), and testify that we have seen (with Ayin)." Its Kabbalistic value is 80.
"The “I” is the origin of the error and of its consequence, which is pain. Thus, as long as the “I” exists, pain and error will continue to exist."