We should, I believe, beware of the pitfalls described by...

We should, I believe, beware of the pitfalls described by Taine: 'Imagine a man who sets out on a voyage equipped with a pair of spectacles that magnify things to an extraordinary degree. A hair on his hand, a spot on the tablecloth, the shifting fold of a coat, all will attract his attention; at this rate, he will not go far, he will spend his day taking six steps and will never get out of his room.' We have to get out of this room.