It is ours also to disarm and elude the wrath of men, to turn the swords of our foes against each other, to glide (if not incorporeal) invisible to eyes over which we can throw a mist and darkness.

And this some seers have professed to be the virtue of a stone of agate.

Abaris placed it in his arrow.

I will find you an herb in yon valley that will give a surer charm than the agate and the arrow.

In one word, know this, that the humblest and meanest products of Nature are those from which the sublimest properties are to be drawn." "But," said Glyndon, "if possessed of these great secrets, why so churlish in withholding their diffusion?
Does not the false or charlatanic science differ in this from the true and indisputable,--that the last communicates to the world the process by which it attains its discoveries; the first boasts of marvellous results, and refuses to explain the causes ?" "Well said, O Logician of the Schools; but think again.