A person who doesn't know but knows that he doesn't know is a student; teach him. A person who knows but who doesn't know what he knows is asleep; awaken him. But a person who knows and knows that he knows is wise; follow him. (Traditional Proverb)
An answer brings no illumination unless the question has matured to a point where it gives rise to this answer which thus becomes its fruit. Therefore learn how to put a question. (Traditional Proverb)
All is within yourself. Know your most inward self and look for what corresponds with it in nature. (Traditional Proverb)