Those who have any feeling for sound-symbolism,
and who wish to develop it, will be advised to ponder [word-roots]. They
may find, in the consonantal element in language, vestiges of those forces
which brought into being the external structure of nature, including the
body of man; and in the original vowel-sounds, the expression of that inner
life of feeling and memory which constitutes his soul. It is the two together
which have made possible, by first physically and then verbally embodying
it, his personal intelligence. (124)