Sir James Jean interpreted the result of developments in physics during the first part of the twentieth century as follows: Today there is a wide measure of agreement, which on the side of Physics approaches almost to unanimity, that the stream of knowledge is heading towards a non-mechanical reality; the universe begins to look more like a great thought than like a great machine. Mind no longer appears as an accidental intruder into the realm of matter; we are beginning to suspect that we ought rather to hail it as the creator and governor of the realm of matter.10
