- Papal Addresses to the Pontifical Academy of Sciences 1917-2000 and the Pontifical Academy of Social Sciences 1994-2001 (Scripta Varia 100), by Popes Benedict XV, Pius XI, Pius XII, John XXIII, Paul VI, and John Paul II (Vatican City: Pontifical Academy of Sciences, 2003). Available in pdf format at the Pontifical Academy of Sciences.
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“The heavens shew forth the glory of God, and the firmament declareth the work of his hands. Day to day uttereth speech, and night to night sheweth knowledge. There are no speeches nor languages, where their voices are not heard. Their sound hath gone forth into all the earth: and their words unto the ends of the world.” (Psalm xviii (xix), 2-5)
“[T]here is a twofold order of knowledge… [I]n addition to things to which natural reason can attain, mysteries hidden in God are proposed to us for belief which, had they not been divinely revealed, could not become known… [A]lthough faith is above reason, nevertheless, between faith and reason no true dissension can ever exist, since the same God, who reveals mysteries and infuses faith, has bestowed on the human soul the light of reason; moreover, God cannot deny Himself, nor ever contradict truth with truth…” (First Vatican Ecumenical Council, Dogmatic Constitution “Dei Filius”)