"Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude."
"In truth, politeness is artificial good humor, it covers the natural want of it, and ends by rendering habitual a substitute nearly equivalent to the real virtue. It is the practice of sacrificing to those whom we meet in society, all the little inconveniences and preferences which will gratify them, and deprive us of nothing worth a moment's consideration; it is the giving a pleasing and flattering turn to our expressions, which will conciliate others, and make them pleased with us as well as themselves. How cheap a price for the good will of another!"
Source: Thomas Jefferson (1853). “The writings of Thomas Jefferson: being his autobiography, correspondence, reports, messages, addresses, and other writings, official and private”, p.389
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