Indeed. The entire argument rests on what you define as income. If you work for a living that's indisputably income and you are going to pay a lot of taxes on

Indeed. The entire argument rests on what you define as income. If you work for a living that's indisputably income and you are going to pay a lot of taxes on it, especially if you are a moderately prosperous professional making something like $200k/year. On the other hand of you are Mitt Romney you don't have "income" you just have fungible assets that mysteriously increase in value and on which you are not taxed.