4. The Threshold In Nature and In Man

In olden times, these two aims—knowledge of Nature and knowledge of self—were associated in the mind of man with quite strange, not to say terrifying, conceptions. It was indeed not thought possible for man to continue in his ordinary way of life if he wanted to set out on the path to knowledge; for on that path he would inevitably find himself in the presence of deep uncertainties before he could come to any satisfying conviction. In our day we are not accustomed to think of the path of knowledge as something that leads us away from.the natural order of our life; it leaves us free to go forward in everyday life as before. And one must admit that the knowledge offered to us in our laboratories and observatories and clinics is not such as to throw us “right off the rails,” in the way attributed to the path of knowledge that the pupils of wisdom in early times had to tread.