"In regions where mind speaks to mind there is perfect expression, far beyond anything words may convey; even in thought-transference of a limited kind it is not words that are sent, but ideas. A speaker puts into words such part of his mental pictures as he can, and these words call up in the hearer’s mind pictures corresponding to those in the mind of the speaker; the mind deals with the pictures, the images, not with the words, and half the controversies and misunderstandings that arise come about because people attach different images to the same words, or use different words to represent the same images. p. 14"