Alan Gregg
The United States Constitution says that they are devoted to "Life, Liberty and the Pursuit of Happiness." The Canadian Constitution is devoted to "Peace, Order and Good Government." That's the essential difference.
John Ralston Saul
The historical phrase is in fact "Peace, Welfare and Good Government."
[But one should say]
"Canada is a country of aboriginal inspiration, of Métis mentality, whose motto is Tranquility, Happiness and Good Government."