A Word from Pope Leo XIII

"According to the Fathers of the Church, the Eucharist must be thought of as a certain continuation and extension of the Incarnation. Through it, the substance of the incarnate Word is linked with individual men and women, and, in an admirable manner, the supreme sacrifice of Calvary is renewed, as was foretold by the prophet Malachi, 'In every place a clean oblation is sacrificed and offered to my Name.' This miracle, the very greatest of its kind, is accompanied by innumerable miracles, for here all the laws of nature are suspended. The whole substance of bread and wine is converted into the Body and Blood of Christ; the appearances of bread and wine, subjects of no reality, are sustained by divine power."

--Leo XIII, Mirae Caritatis, 1902