Besides, their Aristotle is a poet in text, his principles are but fancies, and they stand more on our concessions, then his bottom. - Thomas Vaughan

I have two admonitions more to the ingenuous, and well-disposed reader. First that he would not slight my endeavors because of my years, which are but few. It is the custom of most men to measure knowledge by the beard, but look thou rather on the Soul, an essence of that Nature, que ad perfectionem suam curricula temporis non defiderat. Secondly, that he would not conclude any thing rashly concerning the subject of this art, for it is a principle not easily apprehended. p. 69

That I should profess magic in this discourse and justify the professors of it withal is impiety with many but religion, with me. It is a conscience that I have learned from authors greater than myself and scriptures greater than both.

Their philosophy is like a church, that is all discipline, and no doctrine