"While the planets in the signs have specific meanings, their placement in the horoscope is of prime significance. The zodiac is symbolically divided into twelve segments, referred to as ‘houses.’ The houses determine the affairs of life that the planet will influence when positioned there at the time of birth. However, this is not as simple as it may sound. To begin with, each house has many meanings, and the more time one devotes to the experimental side of astrology, the more meanings come into focus. Therefore to ensure correct chart interpretation, it is necessary that the astrologer determine the most relevant meaning or meanings for each planet at the time of the reading. This is especially crucial in predictive work."
- Robin MacNaughton’s Sun Sign Personality Guide, p. 14, 1977