Aristotle,
Posterior Analytics
(1901)
“ From what causes mistakes arise with regard to the discovery of the Universal. How they may be avoided Chap. VI.: Demonstration is founded on Necessary and Essential Principles Chap. VII.: The Premises and the Conclusion of a Demonstration must belong to the same genus Chap. VIII.: Demonstration is concerned only with what is eternal Chap. IX.: Demonstration is founded not on general, but on special and indemonstrable principles; nor is it easy to know whether one really possesses knowledge drawn from these principles Chap. X.: The Definition and Division of Principles Chap. ”

