Hristiyan Astrolojisi

To the learner, and to everyone who will be studious in this way, I give these cautions. First, that he be very exact in knowing the use of his Ephemeris, in setting a scheme of heaven for all the hours of the day or night. Secondly, I would have the student be very perfect in knowing the nature of the Houses, so that he may better discover from which house to seek an answer for the question proposed, lest for want of true understanding he mistake one thing for another. Thirdly, I would have him ready in, and well able to understand, the debilities and fortitudes of every planet, both essential and accidental. Fourthly, he must be well-versed in discovering the nature of the significator, what it signifies naturally, what it signifies accidentally, and how to vary its meaning as necessity requires.