A word spoken in a certain tone shows subservience, and the same word spoken in a different tone expresses command; a word spoken in a certain pitch shows kindness, and the same word spoken in a different pitch expresses coldness. Words spoken in a certain rhythm show willingness, and the same words express unwillingness when spoken at a different degree of speech. Up to the present day the ancient languages Sanskrit, Arabic and Hebrew cannot be mastered by simply learning the words, pronunciation and grammar, because a particular rhythm and tonal expression is needed. The word in itself is frequently insufficient to express the meaning clearly. The student of language by keen study can discover this. Even modern languages are but a simplification of music. No words of any language can be spoken in one and the same way without the distinction of tone, pitch, rhythm, accent, pause and rest. A language, however simple, cannot exist without music in it; music gives it a concrete expression. For this reason a foreign language is rarely spoken perfectly; the words are learned, but the music is not mastered.