Labour was the first price, the original purchase - money that was paid for all things. It was not by gold or by silver, but by labour, that all wealth of the world was originally purchased.
Adam SmithIt may indeed be doubted whether butchers' meet is anywhere a necessary of life. Grain and other vegetables, with the help of milk, cheese, and butter, or oil where butter is not to be had, afford the most plentiful, the most wholesome, the most nourishing, and the most invigorating diet. Decency nowhere requires that any man should eat butchers' meat.
Adam Smith