“A direct tax upon the wages of labour, therefore, though the labourer might perhaps pay it out of his hand, could not properly be said to be even advanced by him, at least if the demand for labour and the average price of provisions remained the same after the tax as before it. In all such cases, not only the tax but something more than the tax would in reality be advanced by the person who immediately employed him.” Income TaxAdam Smith Institute Author:Adam Smith