Roy B. Kester, Accounting theory and practice… (1922)
“ Every effort is offset by the cost of that endeavor, and unless the result of the effort be more than its cost, its aim, viz., the increase of net worth, is not accomplished.Relation between Profit and Loss and Financial Elements.—These income-producing efforts are the agencies that bring about the changes in the values of assets and liabilities. Expenses and costs are incurred for the purpose of securing income. Every expense or cost that is settled causes a diminution of business assets, usually of the asset cash. ”
