The reason why we have wrong judgment of the things we mentioned earlier is that we do not look deeply into them to see what they are, but conceive a liking for them or a dislike of them from the very first glance, judging by appearances. These likes and dislikes prejudice our mind and darken it; and so it cannot form a right judgment of things as they really are. So…if you wish to be free of this prelest in your mind, keep strict attention over yourself; and when you see a thing with your eyes, or visualize it in your mind, keep a firm grip on your desires and do not allow yourself at the first glance either to conceive a liking for the thing or a dislike for it, but examine it in a detached way with the mind [nous] alone. Unobscured by passion, the mind then remains in a state natural to it, which is free and pure, and has the possibility to know the truth and to penetrate into the depths of a thing, where evil is often concealed under a deceptively attractive exterior and where good is sometimes hidden under a bad appearance.
Chapter Eight, Unseen Warfare
*each of the flowers or plants in the slide show is known for its beauty and for being poisonous