When someone asks me if I "believe" in astrology, my response is inspired by the late Swiss psychologist, Carl Jung, who, when asked if he "believed" in God responded, "No, I do not believe in God, I know God." Jung's distinction between belief and knowing intrigued me.
Yes, I pondered, there is a distinction between that which we believe to be true and that which we know to be true. I concluded for myself that belief requires trust, a feeling, imagination, hope, faith, and a deep conviction and commitment to the subject, person, or experience that one "believes in." Although it may be subjective, I further concluded that knowledge is learned information that is tangible, provable for the most part, and supported by hands on experience. Knowledge fosters the thinking realm of the individual.
One person may believe in fairies without ever having had a real encounter with them. Another individual may have had a life altering sighting of fairies, and, therefore, has a unique knowledge of fairies that the person without the experience may never have. It is a very different reality for the individual who dreams of seeing a fairy verses the individual who has actually seen one.
I do not believe in astrology. I do not dream of it or imagine it to be real. As a practicing professional astrologer for twenty years and a committed student for thirty, I have established a respectable knowledge of the subject, and I am sufficiently satisfied with my own knowledge and experience with astrology. I know astrology. I have studied it and I can attest that it benefits those who choose to use it as a tool in life.