I doubt any serious economist believes tax cuts pay for themselves.
There was a time when Democrats and Republicans alike could talk sense about tax rates, in terms of what is best for the economy, without demagoguery about "tax cuts for the rich."
Democratic presidents Woodrow Wilson and John F. Kennedy spoke plainly about the fact that higher tax rates on individuals and businesses did not automatically translate into higher tax revenues for the government. Beyond some point, high tax rates on those with high incomes simply led to those incomes being invested in tax-free bonds, with the revenue from those bonds being completely lost to the government -- and the investments lost...
We'll all be back to eating horse meat (as long as it lasts).
Do you like N, Korean Stone Soup???
Go do the research. Democrat talking points are irrelevant when the facts show differently.
Thomas Sowell has a doctorate in economics and is a serious economic heavyweight, unlike Obama or you.