Definition of Income for Tax Purposes. The Internal Revenue Code requires you to pay taxes on most types of income. Even some non-monetary compensation meets the definition of income for tax purposes. Certain types of income are exempt from income tax or qualify to have the tax deferred to a later date. The tax code is complex and contains numerous exceptions to every rule; consult with a tax professional for advice on your specific situation.
Rene Descartes was influenced by Aristotelianism, Stoicism as wellas Saint Augustine of Hippo (also known as Saint Austin).
But there is more to it than that. This is where Descartes slips from the idea of science as empirical to the idea of science as a priori, from the idea of science as a method rooted in observation and experiment to the idea of a science whose method is rooted in the demonstrations of pure reason.