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Use "harmoniser" in a sentence
"The Golden Rule is a wonderful developer in human life, a wonderful harmoniser in community life -- with great profit it could be extended as the law of conduct in international relations."
"Why then, it may be asked, should not Hazlitt take the position of an improver and harmoniser of the doctrine rather than of a fierce opponent?"
"Age is to the work of contesting human hands a wonderful harmoniser of differences."