Profit: The positive difference between input of value and output of value whose dominant type is private money-capital inputs and private money capital outputs to maximum gain, but in principle can include social profit from the positive difference between public investment and life-value gain of citizens.

Source: What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.