Thevastsignificanceofthisview，anditspowerinresistinganyrealastronomicalscience，weshallsee，especiallyinthetimeofGalileo。
ThegreattriadofthinkersculminatedinSt。ThomasAquinas——thesaintedtheologian，thegloryofthemediaevalChurch，the“AngelicDoctor。”themostmarvellousintellectbetweenAristotleandNewton；hetowhomitwasbelievedthatanimageoftheCrucifiedhadspokenwordspraisinghiswritings。
Largeofmind，strong，acute，yetjust——evenmorethanjust——tohisopponents，hegaveforth，inthelatterhalfofthethirteenthcentury，hisCyclopaediaofTheology，theSummaTheologica。Inthishecarriedthesacredtheoryoftheuniversetoitsfulldevelopment。Withgreatpowerandclearnesshebroughtthewholevastsystem，materialandspiritual，intoitsrelationstoGodandman。[42]
[42]ForthebeliefsofChaldeanastronomersinrevolvingspherescarryingsun，moon，andplanets，inasolidfirmamentsupportingthecelestialwaters，andinangelsasgivingmotiontotheplanets，seeLenormant；alsoLethaby，13-21；alsoSchroeder，Jensen，Lukas，etal。Forthecontributionofthepseudo-
Dionysiustomediaevalcosmology，seeDion。Areopagita，DeCoelestiHierarchia，vers。Joan。Scoti，inMigne，Patr。Lat。，cxxii。ForthecontributionofPeterLombard，seePet。Lomb。，Libr。Sent。，II，i，8，-IV，i，6，7，inMigne，tome192。ForthecitationsfromSt。ThomasAquinas，seetheSumma，ed。Migne，especiallyParsI，Qu。70，tomei，pp。1174-1184；alsoQuaestio47，Art。iii。Forgoodgeneralstatement，seeMilman，LatinChristianity，iv，191etseq。；andforrelationofCosmastothesetheologiansofwesternEurope，seeMilman，asabove，viii，228，note。