"The best defence of peace is not power, but the removal of the causes of war, and international agreements which will put peace on a stronger foundation, than the terror of destruction."

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Truth then seems to me, in the proper import of the word, to signify nothing but the joining or separating of Signs, as the Things signified by them do agree or disagree one with another. The joining or separating of signs here meant, is what by another name we call proposition. So that truth properly belongs only to propositions: whereof there are two sorts, viz. mental and verbal; as there are two sorts of signs commonly made use of, viz. ideas and words.

— John Locke