They are revealed in all the scientific literature and thoughts of our philosophers.  They are revealed via the God - Given talents in each of us who genuinely seek more bits of truth.  Those that believe they have  The Truth are deluding themselves. The mind of man is too small for that.   The Holy Spirit is much more busy than bishops and priests give Her credit for.  These men  should read more of what She constantly reveals to the laity in all generations.  We have the Einsteins, Sabins,, Burbers and etc.  She does not limit Herself to one discipline or one religion.  She is active giving us more scientific, and ethical truth in each and every generation.  To bad dogmatists fail to listen.  There perhaps is no sin greater to not listen to what She tells us.