"The power which has always started the greatest religious and political avalanches in history rolling has from time immemorial been the magic power of the spoken word, and that alone.
The broad masses of the people can be moved only by the power of speech. All great movements are popular movements, volcanic eruptions of human passions and emotional sentiments, stirred either by the cruel Goddess of Distress or by the firebrand of the word hurled among the masses; they are not the lemonade-like outpourings of the literary aesthetes and drawing-room heroes."
Aldoph Hitler – Mein Kampf
Italicized emphasis added by me.