A, 71b 18-23
demonstration I mean a syllogism which produces
scientific knowledge, in other words one which
enables us to know by the mere fact that we grasp
Νοw if knowledge is such as we have
assumed, the demonstrative knowledge must proceed
from premisses which are true, primary, immediate,
better known than, prior to, and causative of the
conclusion. Οn these conditions only will the
first principles be properly applicable to the fact
which is to be proved.
Posterior Analytics, by HUCH TREDENNICK, M.A.
Professor of Classics in the University of London,
Harvard University Press