The impression you get about astrologers in general is that they are fakes, and that they are excellent at educated guessing and at sensing the weaknesses of others in order to tell them exactly what they want to hear.
This is exactly the case with the main character who was trying to escape a crime committed in youth and yet ends up channeling fear and personal weaknesses through that of others, and through the fake assumption that astrology is a tool to observe the future.
The astrologer really knows nothing about any man’s future and simply plays the part of a fortune-teller to earn a living. The astrologer developed strong skills in telling people what they wanted to hear and dressed somewhat mysteriously to attract customers. To a certain degree, the life he lives is a lie.
The astrologer, as the narration tells us, should be living a comfortable life on the family farm. However, after a fight in which the astrologer brutally assaulted someone, he had to flee his region. The astrologer believed that he had killed the man and therefore had to make a new life for himself. At the end of the story, the astrologer learns his victim did not die all those years ago.