Pierre-Joseph Proudhon,
What is Property?
(1876)
“ Political economy, indeed, treats of the production, distribution, and consumption of wealth or values. But of what values? Of the values produced by human industry; that is, of the changes made in matter by man, that he may appropriate it to his own use, and not at all of Nature’s spontaneous productions. Man’s labor consists in a simple laying on of hands. When he has taken that trouble, he has produced a value. ”
