It's common to hear in Patriot Circles that the IRC doesn't define the word "income"..
Now, glancing through Title 26, we see that terms such as "gross income", "adjusted gross income", "taxable income", etc are all defined:
http://www.law.cornell.edu/uscode/26...30_B_40_I.html
My question is: is the idea that "income" isn't defined in the IRS just a Patriot Myth, or does it stem from the fact that all these definitions given above (gross income, adjusted gross income, taxable income, etc) are all defined circularly in terms of this abstract concept of "income" - a concept which itself is *not* defined in the IRC?