Again, whatever science my mind is cultivating, on whatever object it fixes its thoughts, whether I reflect upon others or upon myself, all lifts me up to God, all leads me back to him; he is the first link in the chain to which all truths hold; he is the last, in which they all end. I know nothing thoroughly, either in philosophy or in morals, if I do not know God, and I cannot reason as I should on anything if I ignore God as the first cause, and the last end of all things.
--Fr. Jean-Nicolas Grou, S.J. (1731-1803)