Self knowledge

The eye of providence in the center of the hexagram. 
As above, therefore, below is a dictum in sacred geometry or Hermeticism. 
Hand drawn medieval esoteric style vector illustration. – Vector by Croisy

“Without self knowledge, without understanding the working and functions of his machine, man cannot be free, he cannot govern himself and he will always remain a slave.”
― Gurdjieff

Jiddu Krishnamurti Commentaries on Living

Curiosity is not the way of understanding. Understanding comes with self-knowledge. He who suffers is not curious; and mere curiosity, with its speculative overtones, is a hindrance to self-knowledge. Speculation, like curiosity, is an indication of restlessness; and a restless mind, however gifted, destroys understanding and happiness.

–Jiddu Krishnamurti Via: link