We fail so easily to see the difference between fear of the unknown and respect for the unknown, thinking that those who do not hasten in with bright lights and knives are deterred by a holy and superstitious fear. Respect for the unknown is the attitude of those who, instead of raping nature, woo her until she gives herself. But what she gives, even then, is not the cold clarity of the surface but the warm inwardness of the body - a mysteriousness which is not merely a negation, a blank absence of knowledge, but that positive substance which we call wonderfull.