Matter is Energy. Energy is Light. We are all Light Beings.
Albert Einstein

Knowledge is structured in consciousness. The process of education takes place in the field of consciousness. The prerequisite to complete education is therefore the full development of consciousness - enlightenment. Knowledge is not the basis of enlightenment, enlightenment is the basis of knowledge.
Maharishi Mahesh Yogi

To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.
Copernicus