"Christians well know that the much-decorated statue of the Church, as it now stands, is not of pure chiseled marble, but of clay, cemented together by blood and tears and hardened in the fires of hatred and persecution."

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Mountains have been formed by one [or other] of the causes of the formation of stone, most probably from agglutinative clay which slowly dried and petrified during ages of which we have no record. It seems likely that this habitable world was in former days uninhabitable and, indeed, submerged beneath the ocean. Then, becoming exposed little by little, it petrified in the course of ages.

— Avicenna