Experience in the technique of taking the emotion out of words and substituting a clear logical significance will stand a man in good stead if he wishes to keep his head amid the welter of excited propaganda. In 1917, Wilson proclaimed the great principle of self-determination, according to which every nation had a right to direct its own affairs; but unfortunately he forgot to append the definition of the word "nation."
Source: Bertrand Russell: A Plea for Clear Thinking(1947)
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