He alone that has realized the Self in the Heart has known the Truth. Having transcended the dualities, he is never perplexed. That alone is True Knowledge, which reveals the Self through enquiry, “To whom pertains the interdependent pair of knowledge and ignorance?”
Self-knowledge, in which both knowledge and phenomena fall off, is alone True Knowledge, because the Self is the Source of all. To know all else except the knower is but ignorance.
The Self being Knowledge Absolute, it is neither knowing nor not knowing. It can never be nescience. The Self being one and universal, knowledge of diversity is but ignorance which too is not apart from the Self.
– Ramana Maharshi, Excerpted from “Forty Verses”