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Ot]ry^olite. 
A mineral, composed of silica, magnesia,, and iron, varying in color 
from a pale green to a bottle-green, and occurring in glassy grains or pieces • 
disseminated in basalt and many lavas, and sometimes in large imbedded 
crystals. It occasionally occurs in other rocks. 
Mysteries of Holy Faith. 
“Mortals, remain contented at the Quia; 
For if ye had been able to see all, 
No need there were for Mary to give birth.” 
— Dante , Purgatorio, iii. 37-39. 
JT MYSTERY is a truth of which, if expressed by a proposition, we 
J-*- know that the predicate of this proposition is to be attributed to the 
subject, but without our perceiving the intrinsic reason of such agreement. 
There are mysteries, says Louis Jouin, whose existence we know, or 
at least may know, by the use of our reason, such as the fact of our exist¬ 
ence, of the union of body and soul, and many others; these may be called 
natural mysteries. 
Other mysteries there are, whose existence would forever have re¬ 
mained unknown to us, had not God revealed them: these are supernatural 
mysteries. 
That there are such mysteries, continues our learned author just 
quoted, is plain; for truth is coextensive with being, since whatever is, is 
true, inasmuch as it is; lienee, as being is infinite, truth is likewise infinite. 
We must, therefore, admit truths which surpass the limited power of our 
understanding; to deny this were to make the finite the measure of the 
infinite. 
God may, if lie please, reveal supernatural mysteries; for, on the 
one hand, God can reveal truth, and, on the other, man can receive the 
knowledge of supernatural mysteries. Indeed, the only difference between 
