We never have a full demonstration, although there is always an underlying reason for the truth, even if it is only perfectly understood by God, who alone penetrated the infinite series in one stroke of the mind.
— Gottfried Wilhelm Leibniz, The Shorter Leibniz Texts (2006)
Source: http://books.google.com/books?id=oFoCY3xJ8nkC&dq
From a 2006 edition of Leibniz's shorter texts, edited by Lloyd H. Strickland.
Topics: mathematics